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  Taiwan Semiconductor (TSMC) Electronic Components Datasheet  

TS34063AA Datasheet

Dc to Dc Converter Controller

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TS34063AA
Dc to Dc Converter Controller
Pin assignment:
1. SC
2. SE
3. CT
4. Gnd
5. Comp.
6. Vcc
7. Ipk
8. Vdriver
Supply Voltage Range 3 V to 40V
Output Driving Current 1.5A
Oscillator Frequency up to 100KHz
General Description
The TS34063A is a monolithic switching regulator and subsystem intended for use as DC to DC converter. It contains an
internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active peak current limit
circuit, drive and a high current output switch.
The TS34063A is specifically designed to be incorporated in step-up, step-down and voltage inverting converter
applications.
The TS34063A is offered in SOP-8 and DIP-8 package.
Features
Pin Descriptions
— Power forward control circuit
— Operating voltage form 3V to 40V
Name
SC
— Low standby current
SE
— Current limit adjustable
CT
— Output switch current up to 1.5A
Gnd
— Variable oscillator frequency up to 100KHz (mDaaxt)aSheet4U.coCmomp.
— Output voltage adjustable
Vcc
Ipk
Vdriver
Description
Switch Collector
Switch Emitter
Timing Capacitor
Ground
Comparator Inverting Input
Vcc Collector
Ipk Sense
Driver
DataShee
Applications
— Charger
— xD-ROM, xDSL product
— DC to DC converter s
Ordering Information
Part No.
TS34063ACD
TS34063ACS
Operating Temp.
(Ambient)
-20 ~ +85 oC
Package
DIP-8
SOP-8
Block Diagram
DataSheet4U.com
TS34063A
DataSheet4 U .com
1-8 2005/02 rev. A


  Taiwan Semiconductor (TSMC) Electronic Components Datasheet  

TS34063AA Datasheet

Dc to Dc Converter Controller

No Preview Available !

www.DataSheet4U.com
Absolute Maximum Rating
Supply Voltage
Comparator Input Voltage Range
Switch Collector Output Voltage
Switch Emitter Voltage
Switch Collector to Emitter Voltage
Driver Collector Voltage
VCC
VFB
VC(SW)
VE(SW)
VCE(SW)
Vc(driver)
Driver Collector Current (note 1)
Ic(driver)
Output Switching Current
Power Dissipation
DIP-8
SOP-8
ISW
Pd
Operating Junction Temperature Range
TJ
Storage Temperature Range
TSTG
Note: Maximum package power dissipation limits must be observed
40
- 0.3 ~ 40
40
40
40
40
100
1.5
1.0
0.5
-0 ~ +125
-65 ~ +150
Electrical Characteristics (VCC =5V, Ta =25 oC; unless otherwise specified.)
V
V
V
V
V
V
mA
A
W
oC
oC
et4U.com
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Oscillator (OSC)
Frequency
Charge Current
Discharge Current
Discharge to Charge current ratio
Current Limit Sense Voltage
Output switch (note1)
FOSC
ICHARGE
IDISCHARGE
IDISCHARGE
/ ICHARGE
VIPK(SENSE)
CT = 1nF, Vpin5= 0V
DVaCtCa=Sh5Vee~t44U0V.com
VCC = 5V ~ 40V
Pin7 to Vcc
IDISCHARGE = ICHARGE
24 33 42 KHz
-- 30 -- uA
-- 200 --
uA
-- 6.5 --
--
250 -- 350 mV
Saturation Voltage
VCE(SAT) ISW= 1A, pin1,8 connected) -- 1.0 1.3 V
Saturation Voltage
DC current gain
Collector off-state current
Comparator
VCE(SAT)
HFE
IC(OFF)
ISW= 1A, Id=50mA
ISW = 1A, Vce= 0.5V
Vce= 40V
-- 0.45 0.7
V
-- 75 --
--
-- 0.01 100 uA
Threshold Voltae
VREF
1.225 1.25 1.275
V
Line regulation
Total device
RegLine VCC = 3V ~ 40V
-- -- 6 mV
Supply Current
VCC = 5V ~ 40V, CT = 1nF,
pin7=Vcc, pin5>Vth,
ICC pin2=Gnd, remaining pins
-- 1.6 3 mA
open
Note: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient
temperature as possible
2. If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (<=300mA)
and high driver currents (>=30mA), it may take up to 2uS for it to come out of saturation. This condition will
shorten the off time at frequencies >= 30KHz, and is magnified at high temperature. This condition does not
occur with a Darlington configuration, since the output switch cannot saturate. If a non-Darlington configuration
is used, the following output drive condition is recommended:
Forced Bata of output switch: Ic output / (Ic driver – 7mA*) >= 10
* The 100ohm resistor in the emitter of the driver divide requires about 7mA before the output switch conducts.
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DataShee
TS34063A
DataSheet4 U .com
2-8 2005/02 rev. A


Part Number TS34063AA
Description Dc to Dc Converter Controller
Maker Taiwan Semiconductor Company
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TS34063AA Datasheet PDF






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