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TSM102ID

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TSM102ID

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Part Number TSM102ID
Manufacturer STMicroelectronics
Description IC CONTROLLER VOLT & CUR 16 SOIC
Datasheet TSM102ID Datasheet
Package 16-SOIC (0.154", 3.90mm Width)
In Stock 75,100 piece(s)
Unit Price $ 0.2842 *
Lead Time Can Ship Immediately
Estimated Delivery Time Jul 15 - Jul 20 (Choose Expedited Shipping)
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Part Number # TSM102ID (Linear - Amplifiers - Special Purpose) is manufactured by STMicroelectronics and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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TSM102ID Specifications

ManufacturerSTMicroelectronics
CategoryIntegrated Circuits (ICs) - Linear - Amplifiers - Special Purpose
Datasheet TSM102IDDatasheet
Package16-SOIC (0.154", 3.90mm Width)
Series-
TypeAmplifier, Comparator, Reference
ApplicationsPower Management
Mounting TypeSurface Mount
Package / Case16-SOIC (0.154", 3.90mm Width)
Supplier Device Package16-SO

TSM102ID Datasheet

Page 1

Page 2

1/9 OPERATIONAL AMPLIFIERS ■ LOW SUPPLY CURRENT : 200µ A/amp. ■ MEDIUM SPEED : 2.1MHz ■ LOW LEVEL OUTPUT VOLTAGE CLOSE TO VCC - : 0.1V typ. ■ INPUT COMMON MODE VOLTAGE RANGE INCLUDES GROUND COMPARATORS ■ LOW SUPPLY CURRENT : 200µ A/amp. ■ (VCC = 5V) ■ INPUT COMMON MODE VOLTAGE RANGE INCLUDES GROUND ■ LOW OUTPUT SATURATION VOLTAGE : 250mV (Io = 4mA) REFERENCE ■ ADJUSTABLE OUTPUT VOLTAGE : ■ Vref to 36V ■ SINK CURRENT CAPABILITY : 1 to 100mA ■ 1% and 0.4% VOLTAGE PRECISION ■ LACTH-UP IMMUNITY DESCRIPTION The TSM102 is a monolithic IC that includes two op-amps, two comparators and a precision volt- age reference. This device is offering space and cost saving in many applications like power supply management or data acquisition systems. ORDER CODE D = Small Outline Package (SO) - also available in Tape & Reel (DT) PIN CONNECTIONS (top view) Part Number Temperature Range Package D TSM102I -40°C, +85°C • TSM102AI -40°C, +85°C • D SO16 (Plastic Micropackage)                                                          !"  !" TSM102/A VOLTAGE AND CURRENT CONTROLLER January 2004

Page 3

TSM102/A 2/9 ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS VCC + = 5V, VCC - = 0V, Tamb = 25°C (unless otherwise specified) OPERATIONAL AMPLIFIER VCC + = 5V, VCC = GND, R1 connected to Vcc/2, Tamb = 25°C (unless otherwise specified) Symbol Parameter Value Unit VCC DC supply Voltage 36 V Vid Differential Input Voltage 36 V Vi Input Voltage -0.3 to +36 V Toper Operating Free-air Temperature Range -40 to +125 °C Tj Maximum Junction Temperature 150 °C Thermal Resistante Junction to Ambient 150 °C/W Symbol Parameter Min. Typ Max. Unit ICC Total Supply Current Tmin. ≤ Tamb ≤ Tmax 0.8 1.5 2 mA Symbol Parameter Min. Typ. Max. Unit Vio Input Offset Voltage Tmin ≤ Tamb ≤ Tmax 1 4.5 6.5 mV DVio Input Offset Voltage Drift 10 µ V/°C Iib Input Bias Current Tmin ≤ Tamb ≤ Tmax 20 100 200 nA Iio Input Offset Current Tmin ≤ Tamb ≤ Tmax 5 20 40 nA Avd Large Signal Voltage Gain R1=10k, Vcc + = 30V, Vo = 5V to 25V Tmin ≤ Tamb ≤ Tmax 50 25 100 V/mV SVR Supply Voltage Rejection Ratio Vcc = 5V to 30V 80 100 dB Vicm Input Common Mode Rejection Ratio Tmin ≤ Tamb ≤ Tmax (Vcc -) to (Vcc +) -1.8 (Vcc -) to (Vcc +) -2.2 V CMR Common Mode Rejection Ratio Vcc + = 30V, Vicm = 0V to (Vcc +) -1.8 70 90 dB Isc Output Short Circuit Current Vid = ±1V, Vo = 2.5V Source Sink 3 3 6 6 mA VOH High Level Output Voltage RL = 10kΩ Vcc + = 30V Tmin ≤ Tamb ≤ Tmax 27 26 28 V VOL Low Level Output Voltage RL = 10kΩ Tmin ≤ Tamb ≤ Tmax 100 150 210 mV SR Slew Rate Vcc = ±15V Vi = ±10V, RL = 10kΩ , CL = 100pF 1.6 2 V/µ s

Page 4

TSM102/A 3/9 COMPARATORS VCC + = 5V, VCC = Ground, Tamb = 25°C (unless otherwise specified) VOLTAGE REFERENCE GBP Gain Bandwidth Product RL = 10kΩ , CL = 100pF, f = 100kHZ 1.4 2.1 MHz ∅ m Phase Margin RL = 10kΩ , CL = 100pF 45 Degrees THD Toatal Harmonic Distortion 0.05 % en Equivalent Input Noise Voltage f = 1kHz 29 Symbol Parameter Min. Typ Max. Unit Vio Input Offset Voltage Tmin ≤ Tamb ≤ Tmax 5 9 mV Iio Input Offset Current Tmin ≤ Tamb ≤ Tmax 50 150 nA Iib Input Bias Current Tmin ≤ Tamb ≤ Tmax 250 400 nA IOH High Level Output Current Vid = 1V, Vcc = Vo = 30V Tmin ≤ Tamb ≤ Tmax 0.1 1 nA µ A VOL Low Level Output Voltage Vid = -1V, Isink = 4mA Tmin ≤ Tamb ≤ Tmax 250 400 700 mV Avd Large Signal Voltage Gain R1 = 15k, Vcc = 15V, Vo = 1 to 11V 200 V/mV Isink Output Sink Current Vid = -1V, Vo = 1.5V 6 16 mA Vicm Input Common Mode Voltage Range Tmin ≤ Tamb ≤ Tmax 0 0 Vcc +-1.5 Vcc +-2 V Vid Differential Input Voltage Vcc + V tre Response Time 1) R1 = 5.1k to Vcc + ,Vref = 1.4V 1. The response time specified is for 100mV input step with 5mV overdrive. For larger overdrive signals, 300ns can be obtained. 1.3 µ s trel Large Signal Response Time Vref = 1.4V, Vi = TTL, R1 = 5.1k to Vcc + 300 ns Symbol Parameter Value Unit VKA Cathode to Anode Voltage Vref to 36 V Ik Cathode Current 1 to 100 mA Symbol Parameter Min. Typ. Max. Unit nV Hz -----------

Page 5

TSM102/A 4/9 ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ Max. Unit Vref Reference Input Voltage -(figure1)- Tamb = 25°C TSM102, VKA = Vref, IK = 10mA TSM102A, VKA = Vref, IK = 10mA 2.475 2.490 2.500 2.500 2.525 2.510 V ∆ Vref Reference Input Voltage Deviation Over Temperature Range -(figure1, note1)) VKA = Vref , IK = 10mA, Tmin ≤ Tamb ≤ Tmax 1. ∆ Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range. ∆ Vref= Vref max. - Vref min 7 30 mV Temperature Coefficient of Reference Input Voltage - note2) VKA = Vref , IK = 10mA, Tmin ≤ Tamb ≤ Tmax 2. The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits whithin which the reference voltage is guaranteed. ±22 ±100 ppm/°C Ratio of Change in Reference Input Voltage to Change in Cath- ode to Anode Voltage -(figure2) IK = 10mA, ∆ VKA = 36 to 3V -1.1 -2 mV/V Iref Reference Input Current -(figure2) IK = 10mA, R1 = 10kΩ , R2 = ∞ Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 1.5 2.5 3 µ A ∆ Iref Reference Input Current Deviation Over Temperature Range -(figure2) IK = 10mA, R1 = 10kΩ , R2 = ∞ Tmin ≤ Tamb ≤ Tmax 0.5 1 µ A Imin Minimum Cathode Current for Regulation -(figure1) VKA = Vref 0.5 1 mA Ioff Off-State Cathode Current -(figure3) 180 500 nA V ref ∆ T∆--------------- V ref ∆ V KA ∆ --------------- # # #$   $%&  $& ' #$  $% & $ $('  $ ('

Page 6

TSM102/A 5/9 Figure 1 : Test Circuit for VKA = Vref Figure 2 : Test Circuit for VKA > Vref Figure 3 : Test Circuit for Ioff  )*     ) )* )    + +    V KA V ref 1 R1 R2 -------+    I ref R1–+= )*   ,

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6/9 This application note explains how to use the TSM102 in an SMPS-type battery charger which features : ■ Voltage Control ■ Current Control ■ Low Battery Detection and End Of Charge Detection 1 - TSM102 PRESENTATION The TSM102 integrated circuit includes two Oper- ational Amplifiers, two Comparators and one ad- justable precision Voltage Reference (2.5V to 36V, 0.4% or 1%). TSM102 can sustain up to 36V power supply volt- age. Figure 1: TSM102 Pinout 2 - APPLICATION CONTEXT AND PRINCIPLE OF OPERATION In the battery charging field which requires ever in- creasing performances in more and more reduced space, the TSM102A provides an attractive solu- tion in terms of PCB area saving, precision and versatility. Figure 2 shows the secondary side of a battery charger (SMPS type) where TSM102A is used in optimised conditions : the two Operational Amplifi- ers perform current and voltage control, the two Comparators provide “End of Charge” and “Low Battery” signals and the Voltage Reference en- sures precise reference for all measurements. The TSM102A is supplied by an auxiliary power supply (forward configuration - D7) regulated by a bipolar transistor and a zener diode on its base (Q2 and DZ), and smoothed by the capacitors C3 and C4. R15 polarizes the base of the transistor and at the same time limits the current through the zener diode during regulation mode of the auxilia- ry power supply. The current and voltage regulations are made thanks to the two Operational Amplifiers. The first amplifier senses the current flow through the sense resistor Rs and compares it with a part of the reference voltage (resistor bridge R7, R8, R9). The second amplifier compares the reference voltage with a part of the charger’s output (resistor bridge R1, R2, R3). When either of these two operational amplifiers tends to lower its ouput, this linear information is propagated towards the primary side via two OR- ing diodes (D1, D2) and an optocoupler (D3). The compensation loops of these regulation functions are ensured by the capacitors C1 and C2.                        !"  !" #-!  APPLICATION NOTE A BATTERY CHARGER USING THE TSM102

Page 8

TSM102/A 7/9 Figure 2 : The Application Schematic - Battery Charger Secondary Side The first comparator ensures the “Low Battery” signal generation thanks to the comparison of a part of the charger’s output voltage (resistor bridge R17, R19) and the reference voltage. Prop- er hysteresis is given thanks to R20. An improve- ment to the chargers security and to the battery’s life time optimization is achieved by lowering the current control measurement thanks to Q1 that shunts the resistor R9 when the battery’s voltage is below the “Low Battery” level. The second comparator ensures the “End of Charge” signal generation thanks to the compari- son of a part of the charger’s output voltage (resis- tor bridge R1, R2, R3) and the reference voltage. When either of these two signals is active, the cor- responding LED is polarized for convenient visual- ization of the battery status. 3 - CALCULATION OF THE ELEMENTS All the components values have been chosen for a two-Lithium-Ion batteries charge application : ■ Current Control : 720mA (Low Battery current control : 250mA) ■ Voltage Control : 8.4V (= 2x 4.2V) ■ Low Battery : 5.6V (= 2x 2.5V + 0.6V) ■ End of Charge : 8.3V (= 2x 4.15V) Current Control : The voltage reference is polarized thanks to the R4 resistor (2.5mA), and the cathode of the refer- ence gives a fixed 2.500V voltage. I = U / R = [Vref( R8 + R9 ) / (R7 + R8 + R9) ] / Rs = [2.5 x (390 + 820) / (10000 + 390 + 820)] / 0.375 = 720mA I = 720mA P = power dissipation through the sense resistor = R I2 = 0.375 x 0.7202 = 194mW In case of “Low Battery” conditions, the current control is lowered thanks to the following equation : I = U / R = [ Vref R8 / (R7 + R8) ] / Rs = [ 2.5 x 390 / (10000 + 390 ) ] / 0.375 = 250mA I (LoBatt) = 250mA Voltage Control : Vout = Vref / [ R2 / (R1 + R2 + R3) ] = 2.5 / [ 56 / (131.5 + 56 + 0.68 ) ] = 8.400V Vout = 8.400V Low Battery signal : If R5 = 0Ω and R6 = open : Vout(LoBatt) = Vref / [ R19 / ( R17 + R19 ) ] = 2.5 / [ 10 / (12.4 + 10) ] = 5.6V Vout(LoBatt) = 5.6V End of Charge signal : Vout(EOC) = Vref / [ (R2 + R3 ) / (R1 + R2 + R3) ] = 2.5 / [(56 + 0.68) / (131.5 + 56 + 0.68)] = 8.300V Vout (EOC)= 8.300V

Page 9

TSM102/A 8/9 Notes: The current control values must be chosen in ac- cordance with the elements of the primary side. The performances of the battery charger in their globality are highly dependent on the adequation of the primary and the secondary elements. The addition of the diode D9 is necessary to avoid dramatic discharge of the battery cells in case of the charger disconnection from the mains voltage, and therefore, the voltage measurement is to be operated on the cathode side of the diode not to take its voltage drop into account. The total bridge value of R1, R2, R3 must ensure low battery dis- charge if the charger is disconnected from main, but remains connected to the battery by mistake. The chosen values impose a 44µ A discharge cur- rent max. R12 and R13 are the equivalent resistors seen from the opamp and from the comparator. A hysteresis resistor can be connected to the “End Of Charge” comparator to ensure proper hystere- sis to this signal, but this resistor must be chosen carefully not to degrade the output voltage preci- sion. It might be needed to impose unidirectionnal hysteresis (by inserting a diode on the positive feedback of the comparator). Figure 3 shows how to use the integrated Voltage Reference to build a precise Power Supply for the TSM102A (and other components if necessary). Pin 8 remains the reference for all voltage mea- surements for the rest of the application. Figure 3 : A precise power supply for the TSM102A and other components  % #-!  ..   %   

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July 1, 2020

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June 25, 2020

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June 18, 2020

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June 10, 2020

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June 8, 2020

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May 30, 2020

Parts received and tested, all can work, thank you

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May 25, 2020

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