TS494 TSC | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 7
Technical content
Features
Complete PWM Power Control Circuitry Uncommitted Outputs for 200mA Sink or Source Current Output Control Selects Single-Ended or Push –Pull Operation Internal Circuitry Prohibits Double Pulse at Either Output Variable Dead-Time Provides Control over Total Range Internal Regulator Provides a Stable 5-V Reference Supply with 5% Tolerance Circuit Architecture Allows Easy Synchronization Pin Assignment
Applications
Charger DC to DC converters
Ordering Information
Part No. Operating Temp. Package TS494CD DIP-16 TS494CS 0 ~ +70 oC SOP-16 SOP-16 DIP-16
TS494 2-7 2003/12 rev. A Function Block Diagram Absolute Maximum Rating Rating Symbol Value Unit Power Supply Voltage Vcc 40 V Collector Output Voltage Vc1, Vc2 40 V Collector Output Current (each transistor) Ic1, Ic2 250 mA Amplifier Input Voltage Range V IR - 30 ~ +40 V Power Dissipation @ Ta<=45 oC Pd 1 W Thermal Resistance, Junction to Ambient R θJA 80 oC/W Operating Junction Temperature Tj 125 oC Storage Temperature Range Tstg -55 ~ +125 oC Operating Ambient Temperature Range Ta 0 ~ +70 oC Derating Ambient Temperature Ta 45 oC Recommended Operating Conditions Rating Symbol Min. Typ. Max Unit Power Supply Voltage Vcc 7 15 40 V Collector Output Voltage Vc1, Vc2 -- 30 40 V Collector Output Current (each transistor) Ic1, Ic2 -- -- 200 mA Amplifier Input Voltage Vin - 0.3 -- Vcc-2.0 V Current Into Feedback Terminal Ifb -- -- 0.3 mA Reference Output Current Iref -- -- 10 mA Timing Resistor R T 1.8 30 500 K Ω Timing Capacitor C T 0.0047 0.001 10 uF Oscillator Frequency Fosc 1 40 200 KHz
TS494 3-7 2003/12 rev. A Electrical Characteristics (Ta=25 oC, VCC = 15V, CT= 0.01uF, RT= 12kΩ; unless otherwise specified.) REFERENCE SECTION Parameter Test Conditions* Min Typ Max Unit Output voltage (Vref) Io=1mA 4.75 5 5.25 V Line regulation Vcc= 7V to 40V -- 2.0 25 Load regulation Io= 1mA to 10mA -- 3.0 15 mV Output voltage change with temp. ∆Ta=Min to Max -- 0.2 1 % Short-circuit output current* Vref= 0 15 35 75 mA OSCILLATOR SECTION Frequency C T= 0.001µF, RT= 30KΩ -- 40 -- KHz Standard deviation of frequency C T= 0.001µF, RT= 30KΩ -- 3.0 -- Frequency change with voltage Vcc= 7V to 40V -- 0.1 -- Frequency change with temperature* C T= 0.001µF, RT= 30KΩ ∆Ta= Min to Max -- -- 12 ERROR AMPLIFIER SECTION Input offset voltage Vo= (pin 3)= 2.5V -- 2.0 10 mV Input offset current Vo= (pin 3)= 2.5V -- 5.0 250 nA Input bias current Vo= (pin 3)= 2.5V -- -0.1 -1.0 µA Common-mode input voltage range Vcc= 7V to 40V -0.3 toV cc-2 V Open-loop voltage amplification ∆Vo= 3V, RL=2KΩ, Vo= 0.5 to 3.5V 70 95 -- dB Unity-gain bandwidth R L= 2KΩ, Vo= 0.5 to 3.5V -- 800 -- KHz Common-mode rejection ratio ∆Vo= 40V 65 90 -- dB Power Supply Rejection Ratio ∆Vcc= 33V, Vo= 2.5V, RL= 2KΩ -- 100 -- dB Output sink current (pin 3) V ID= -15mV to -5V, V(pin3)= 0.7V 0.3 0.7 -- mA Output source current (pin 3) V ID= 15mV to 5V, V(pin3)= 3.5V 2.0 -4.0 -- mA OUTPUT SECTION Collector off-state current V CE= 40V, VCC= 40V -- 2.0 100 Emitter off-state current Vcc= 40V, V E= 0 -- -- -100 µA Common-emitter V E= 0, Ic= 200mA -- 1.1 1.3 Collector-emitter saturation voltage Emitter-follower Vc= 15V, I E= -200mA -- 1.5 2.5 V Output control input current V I= Vref -- -- 3.5 mA DEAD-TIME CONTROL SECTION Input bias current (pin 4) V I= 0 to 5.25V -- -2.0 -10 µA Maximum duty cycle, each output Vi(pin 4)= 0, C T= 0.1µF, RT= 12KΩ -- 45 50 % Zero duty cycle -- 3.0 3.3 Input threshold voltage(pin 4) Maximum duty cycle 0 -- -- V
TS494 4-7 2003/12 rev. A Electrical Characteristics (continues) PWM COMPARATOR SECTION Parameter Test Conditions* Min Typ Max Unit Input threshold voltage (pin 3) Zero duty cycle -- 4.0 4.5 V Input sink current (pin 3) V (pin 3)=0.7V 0.3 0.7 -- mA TOTAL DEVICE Vcc=15V -- 6.0 10 Standby supply current pin 6 at Vref, all other inputs and outputs open Vcc=40V -- 9.0 15 Average supply current Vi (pin4)= 2V, See Figure 1 -- 7.5 -- mA SWITCHING CHARACTERISTICS Output voltage rise time -- 100 200 Output voltage fall time Common-emitter configuration, See Figure 3 -- 25 100 Output voltage rise time -- 100 200 Output voltage fall time Emitter-follower configuration, See Figure 4 -- 40 100 ns UNDERVOLTAGE LOCKOUT SECTION Turn-on Threshold Vcc increasing Iref = 1.0mA 5.5 6.43 7.0 V Remark: z All typical value except for temperature coefficient are at Ta= 25 oC z For conditions shown as Min or Max, use the appropriate value specified under recommended operating conditions. z All typical values except for parameter changes with temperature are at Ta= 25 oC z Duration of the short-circuit should not exceed one second z Standard deviation is a measure of the statistical distribution about the mean as derived from the formula −= ∑ N n n N xxσ z Temperature coefficient of timing capacitor and timing resistor not taken into account
TS494 5-7 2003/12 rev. A Parameter Measurement Information
TS494 6-7 2003/12 rev. A Parameter Measurement Information (continues)
TS494 7-7 2003/12 rev. A SOP-16 Mechanical Drawing R M F SOP-16 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 9.80 10.00 0.386 0.393 B 3.80 4.00 0.150 0.157 C 1.35 1.75 0.054 0.068 D 0.35 0.49 0.014 0.019 F 0.40 1.25 0.016 0.049 G 1.27 (typ) 0.05 (typ) K 0.10 0.25 0.004 0.009 M 0 o 7 o 0 o 7 o P 5.80 6.20 0.229 0.244 R 0.25 0.50 0.010 0.019 DIP-16 Mechanical Drawing D G K CN A B L M J SOP-16 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 17.80 18.05 0.701 0.710 B 6.22 6.48 0.290 0.299 C 3.18 4.45 0.125 0.135 D 0.35 0.55 0.019 0.020 G 1.27 (typ) 0.05 (typ) J 0.25 0.31 0.010 0.012 K 3.25 3.35 0.128 0.132 L 7.75 8.00 0.305 0.315 M - 10 o - 10 o