Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsLinear IC - Custom amplification Amplifier, Comparator, Reference SO 16

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OPERATIONAL AMPLIFIERS

■ LOW SUPPLY CURRENT : 200µA/amp.

■ MEDIUM SPEED : 2.1MHz

■ LOW LEVEL OUTPUT VOLTAGE CLOSE TO

: 0.1V typ.

■ INPUT COMMON MODE VOLTAGE RANGE

INCLUDES GROUND

COMPARATORS

■ LOW SUPPLY CURRENT : 200µA/amp.

■ (V

= 5V)

■ INPUT COMMON MODE VOLTAGE RANGE

INCLUDES GROUND

■ LOW OUTPUT SATURATION VOLTAGE :

250mV (Io = 4mA)

REFERENCE

■ ADJUSTABLE OUTPUT VOLTAGE :

■ V

ref

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

TSM102I -40°C, +85°C

•

TSM102AI -40°C, +85°C •

SO16

(Plastic Micropackage)

Output 1

Inverting Input 1

Non-inverting Input 1

Non-inverting Input 2

Inverting Input 2

Output 2

Vref

Output 4

Inverting Input

Non-inverting Input 4

Non-inverting Input 3

Inverting Input 3

Output 3

Cathode

COMP

TSM102/A

VOLTAGE AND CURRENT CONTROLLER

January 2004

Summary of content (9 pages)

PAGE 1
TSM102/A VOLTAGE AND CURRENT CONTROLLER OPERATIONAL AMPLIFIERS ■ LOW SUPPLY CURRENT : 200µA/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 : 200µA/amp.
PAGE 2
TSM102/A ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit 36 V VCC DC supply Voltage Vid Differential Input Voltage 36 V Vi Input Voltage -0.3 to +36 V Operating Free-air Temperature Range -40 to +125 °C Toper Tj Maximum Junction Temperature 150 °C Thermal Resistante Junction to Ambient 150 °C/W ELECTRICAL CHARACTERISTICS VCC+ = 5V, VCC- = 0V, Tamb = 25°C (unless otherwise specified) Symbol ICC Parameter Min. Total Supply Current Tmin. ≤ Tamb ≤ Tmax Typ Max. Unit 0.8 1.
PAGE 3
TSM102/A Symbol Parameter GBP Gain Bandwidth Product RL = 10kΩ, CL = 100pF, f = 100kHZ ∅m Phase Margin RL = 10kΩ, CL = 100pF THD Toatal Harmonic Distortion en Min. Typ. 1.4 2.1 Max. Unit MHz Degrees 45 0.05 % 29 nV -----------Hz Equivalent Input Noise Voltage f = 1kHz COMPARATORS VCC+ = 5V, VCC = Ground, Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ Max.
PAGE 4
TSM102/A ELECTRICAL CHARACTERISTICS Tamb = 25°C (unless otherwise specified) Symbol Vref ∆Vref Reference Input Voltage Deviation Over Temperature Range -(figure1, note1)) VKA = Vref , IK = 10mA, Tmin ≤ Tamb ≤ Tmax 2. Min. Typ Max. 2.475 2.490 2.500 2.500 2.525 2.
PAGE 5
TSM102/A Figure 1 : Test Circuit for VKA = Vref V Input I V KA K ref Figure 2 : Test Circuit for VKA > Vref VKA Input R1 IK V I ref KA = V R2 Vref Figure 3 : Test Circuit for Ioff VKA = 36V Input I off 5/9  1 + R1 -------- + I – R1 ref  ref R2
PAGE 6
APPLICATION NOTE A BATTERY CHARGER USING THE TSM102 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 Operational Amplifiers, two Comparators and one adjustable precision Voltage Reference (2.5V to 36V, 0.4% or 1%). TSM102 can sustain up to 36V power supply voltage.
PAGE 7
TSM102/A 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. Proper hysteresis is given thanks to R20.
PAGE 8
TSM102/A Notes: The current control values must be chosen in accordance 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.
PAGE 9
TSM102/A PACKAGE MECHANICAL DATA SO-16 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 0.004 0.008 0.46 0.013 0.018 0.25 0.007 1.65 b 0.35 b1 0.19 C MAX. 0.064 0.5 0.010 0.019 c1 45˚ (typ.) D 9.8 10 0.385 E 5.8 6.2 0.228 e 1.27 e3 0.393 0.244 0.050 8.89 0.350 F 3.8 4.0 0.149 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 8 0.157 0.024 ˚ (max.