UM601A-S08-R

UNISONIC TECHNOLOGIES CO., LTD UM601/A Preliminary LINEAR INTEGRATED CIRCUIT VOLTAGE AND CURRENT CONTROLLER DESCRIPTION The UTC UM601/A integrated circuit incorporates a high stability series band gap voltage reference, two ORed operational amplifiers and a current 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. The controlled current generator can be used to modify the level of current limitation by offsetting the information coming from the current sensing resistor. It can be used in voltage supervisors, every types of application requiring a precision voltage regulation and current limitation, over voltage protection, battery charger with a constant voltage and a limited output current. FEATURES * 1.24V Series Voltage Reference with 10mA Output Current and 1% Precision (UM601A) * Two Operational Amplifiers with ORed Output and 1MHz Gain Bandwidth Product * Built-In Current Generator with Enable / Disable Function * 4.5 ~ 32V Supply Voltage Range ORDERING INFORMATION Normal UM601-S08-R UM601-D08-T UM601A-S08-R UM601A-D08-T Ordering Number Lead Free UM601L-S08-R UM601L-D08-T UM601AL-S08-R UM601AL-D08-T Halogen Free UM601G-S08-R UM601G-D08-T UM601AG-S08-R UM601AG-D08-T Package SOP-8 DIP-8 SOP-8 DIP-8 Packing Tape Reel Tube Tape Reel Tube www.unisonic.com.tw Copyright © 2010 Unisonic Technologies Co., Ltd 1 of 5 QW-R105-028.B UM601/A PIN CONFIGURATION Preliminary LINEAR INTEGRATED CIRCUIT VREF 1 VREF 8 VCC + CRREF - CSEN 2 7 VRIN 3 6 OUTPUT GND 4 + - 5 CRIN PIN DESCRIPTION PIN 1. 2. 3. 4. 5. 6. 7. 8. NAME VREF CSEN CRREF GND CRIN OUTPUT VRIN VCC TYPE OUTPUT INPUT INPUT INPUT INPUT OUTPUT INPUT INPUT FUNCTION Voltage Reference Output 1.24V, 10mA max. Do not short circuit Current source enable input. This current source can be used to offset the voltage measurement on the sense resistor and therefore to modify the charge current. The current source is enabled when the input volage on pin 2 is lower than 0.8V Current Limitation Reference Input Ground Current Limitation Loop Input, connected to the sense resistor Output pin common to the voltage regulation and current limitation loops. This output can drive the primary side (LED) of an optocoupler Voltage Regulation Loop Input Power Supply Input (4.5 ~ 32VDC) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R105-028.B UM601/A BLOCK DIAGRAM Preliminary LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R105-028.B UM601/A Preliminary LINEAR INTEGRATED CIRCUIT UNIT V mA mW V mA °C °C ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS DC Supply Voltage VCC 36 Output Current IOUT 20 Power Dissipation PD 200 Input Voltage VIN -0.3 ~ VCC-1.5 Input Current IIN ±1 Junction Temperature TJ 150 Storage Temperature TSTG -40 ~ +125 Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. OPERATING CONDITIONS PARAMETER Supply Voltage Ambient Operating Temperature SYMBOL VCC TOPR SYMBOL θJA RATINGS 4.5 ~ 32 TMIN ~ TMAX RATINGS 130 ~ 200 UNIT V °C UNIT °C/W THERMAL DATA PARAMETER Junction to Ambient PARAMETER Total Supply Current Input Voltage Input Offset Voltage Input Bias Current Output Sink Current Large Signal Voltage Gain Supply Voltage Rejection Ratio Common Mode Rejection Ratio Gain Bandwidth Product Output Leakage Current VOLTAGE REFERENCE Reference Voltage Temperature Stability Load Regulation Line Regulation CURRENT GENERATOR Current Source Temperature Stability Line Regulation Voltage at the enable pin to have IO=1.4mA Voltage at the enable pin to have IO=0mA Input Current on the Csen pin Leakage Current VREF KVT Reglo Regli IO KCGT CgliR VCSEN VCSDIS ICSEN ICSLEAK IOUT=1mA, TAMB=25°C TMIN.