TSM101IDT STMicroelectronics

TSM101/A VOLTAGE AND CURRENT CONTROLLER 1.24V SERIES VOLTAGE REFERENCE WITH 10mA OUTPUT CURRENT AND 1% PRECISION (TSM101A) TWO OPERATIONAL AMPLIFIERS WITH ORED OUTPUT AND 1MHZ GAIN BAND- WIDTH PRODUCT BUILT-IN CURRENT GENERATOR WITH ENABLE/DISABLE FUNCTION 4.5 TO 32V SUPPLY VOLTAGE RANGE SO8 AND DIP8 PACKAGES N DIP8 DESCRIPTION (Plastic Package) The TSM101/TSM101A integrated circuit incorpo- rates a high stability series band gap voltage refer- ence, two ORed operational amplifiers and a cur- rent source. This IC compares the DC voltage and the current level at the output of a switching power supply to an internal reference. It provides a feedback through an optocoupler to the PWM controller IC in the primary side. D SO8 The controlled current generator can be used to (Plastic Micropackage) modify the level of current limitation by offsetting the information coming from the current sensing resistor. APPLICATIONS PIN CONNECTIONS (top view) This circuit is designed to be used in battery chargers with a constant voltage and a limited out- put current. It can be used in every types of application requir- ing a precision voltage regulation and current limi- Vref 8 tation. 1 Other applications include voltage supervisors, over voltage protection... 7 2 ORDER CODE Package 6 Temperature 3 Part Number Range ND TSM101C/AC -20C, +80C 5 4 TSM101I/AI -40C, +105C N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) June 2001 1/13TSM101/A ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit 1) V 36 V DC supply Voltage CC 2) I 20 mA Output Current out P Power Dissipation 200 mW d 3) V -0.3, V -1.5 V in Input Voltage CC I Input Current 1 mA out T Storage Temperature -40 to +125 C stg T Maximum Junction Temperature 150 C j T Thermal Resistante Junction to Ambiant 130 to 200 C/W thja 1. All voltages values, except differential voltage are with respect to network ground terminal. 2. The voltage reference is not protected against permanent short circuit. 3. The magnitude of input and output voltages must never exceed -0.3V or VCC -1.5V. OPERATING CONDITIONS Symbol Parameter Value Unit V Supply Voltage 4.5 to 32 V CC T T to T Operating Free Air Temperature Range oper max min ELECTRICAL CHARACTERISTICS T = 25C, V = 15V (unless otherwise specified) amb CC OPERATIONAL AMPLIFIER: TSM101C/I/AC/AI Symbol Parameter Min. Typ. Max. Unit Total Supply Current mA I CC V = 1.5V 2 CC V V - 1.5V Input Voltage Range 0 V i CC Input Offset Voltage V 25C -5 15 mV io T T T -7 7 min. amb max. Input Bias Current nA V =1.2V on pin and V =0V on pin 5 in in I ib 25C -700 -300 0 T T T -1000 0 min. amb max. Output Sink Current, V =2.5V mA ol I 25C 15 sink T T T 8 min. amb max. Large Signal Voltage Gain R =2k A V/m vo L T T T 15 V min. amb max. Supply Voltage Rejection Ratio SVR dB T T T 65 90 min. amb max. Common Mode Rejection Ratio CMR dB T T T 80 min. amb max. Gain Bandwith Product V =15V, F = 100kHz GBP cc 1 MHz V = 10mV, R = 2k, C = 100pF in L L Output Leakage Current I 25C 2 A o T T T 7 min. amb max. 2/13