TSM102AIDT ,DUAL OP-AMP DUAL COMPARATOR & ADJUSTABLE VOLTAGE REFERENCEELECTRICAL CHARACTERISTICS+ -V = 5V, V = 0V, T = 25°C (unless otherwise specified) CCCC ambSym ..
TSM102AIN ,DUAL OPERATIONAL AMPLIFIERTSM102/A DUAL OPERATIONAL AMPLIFIER - DUAL COMPARATORAND ADJUSTABLE VOLTAGE REFERENCEOPERATIONAL A ..
TSM102AIPW ,Dual Opamp, Dual Comparator with Voltage Reference 16-TSSOP -40 to 85FEATURES APPLICATIONS• Switch-Mode Power Supplies• OPERATIONAL AMPLIFIERS• Battery Chargers– Low Su ..
TSM102I ,DUAL OPERATIONAL AMPLIFIERABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitVCC Supply Voltage 36 VV Differential Input Volt ..
TSM102ID ,DUAL OP-AMP DUAL COMPARATOR & ADJUSTABLE VOLTAGE REFERENCEELECTRICAL CHARACTERISTICS+ -V = 5V, V = 0V, T = 25°C (unless otherwise specified) CCCC ambSym ..
TSM102IDT ,DUAL OP-AMP DUAL COMPARATOR & ADJUSTABLE VOLTAGE REFERENCETSM102/AVOLTAGE AND CURRENT CONTROLLER OPERATIONAL AMPLIFIERS■ LOW SUPPLY CURRENT : 200μA/am ..
UC282-3 ,High Speed PWM ControllerBLOCK DIAGRAMOscillator Charging Current (Pin 5) ........ -5mAPower Dissipation at TA = 60 °C .... ..
UC2823ADW ,High Speed PWM Controllermaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
UC2823ADWTR ,High Speed PWM Controller UC2825A, UC2825B, UC3825A, UC3825B SLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010HIGH-SPEED PWM C ..
UC2823AN ,High Speed PWM ControllerSLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010These devices have limited built-in ESD protection. ..
UC2823BDW ,High Speed PWM Controller UC2825A, UC2825B, UC3825A, UC3825BSLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010TERMINAL FUNCTION ..
UC2823BDW ,High Speed PWM ControllerSLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010These devices have limited built-in ESD protection. ..
TSM102AID-TSM102AIDT-TSM102ID-TSM102IDT-TSM102IN
DUAL OP-AMP DUAL COMPARATOR & ADJUSTABLE VOLTAGE REFERENCE
OPERATIONAL AMPLIFIERS LOW SUPPLY CURRENT : 200μA/amp.� MEDIUM SPEED : 2.1MHz� LOW LEVEL OUTPUT VOLTAGE CLOSE TO CC- : 0.1V typ.� INPUT COMMON MODE VOLTAGE RANGE
INCLUDES GROUND
COMPARATORS LOW SUPPLY CURRENT : 200μA/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
DESCRIPTIONThe 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
N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTIONS (top view)
TSM102/AVOLTAGE AND CURRENT CONTROLLER
TSM102/A
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICSCC = 5V, VCC- = 0V, Tamb = 25°C (unless otherwise specified)
OPERATIONAL AMPLIFIERVCC+ = 5V, VCC = GND, R1 connected to Vcc/2, Tamb = 25°C (unless otherwise specified)
TSM102/A
COMPARATORSVCC+ = 5V, VCC = Ground, Tamb = 25°C (unless otherwise specified)
VOLTAGE REFERENCE
ELECTRICAL CHARACTERISTICSTamb = 25°C (unless otherwise specified) The response time specified is for 100mV input step with 5mV overdrive.
For larger overdrive signals, 300ns can be obtained.
TSM102/A ΔVref is defined as the difference between the maximum and minimum values obtained over the full temperature range. ΔVref= Vref max. - Vref min The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits whithin which the reference voltage is guaranteed.
TSM102/A
Figure 1 : Test Circuit for VKA = V ref
Figure 2 : Test Circuit for VKA > Vref
Figure 3 : Test Circuit for Ioff
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 PRESENTATIONThe 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 OPERATIONIn 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
