TS34063CS datasheet(2/10 Pages) TSC

2 / 10 page

TS34063

Dc to Dc Converter Controller

2/10

Version: A07

Absolute Maximum Rating

Parameter

Symbol

Maximum

Unit

Supply Voltage

VCC

Comparator Input Voltage Range

VFB

- 0.3 ~ 40

Switch Collector Output Voltage

VC(SW)

Switch Emitter Voltage

VE(SW)

Switch Collector to Emitter Voltage

VCE(SW)

Driver Collector Voltage

VC(DRIVER)

Driver Collector Current (note 1)

IC(DRIVER)

100

Output Switching Current

ISW

1.5

DIP-8

1.0

Power Dissipation

SOP-8

0.5

Junction Temperature Range

+125

Storage Temperature Range

TSTG

-65 ~ +150

Note: Maximum package power dissipation limits must be observed

Electrical Characteristics (VCC =5V, Ta =25oC; unless otherwise noted.)

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Oscillator (OSC)

Frequency

FOSC

CT = 1nF, Vpin5= 0V

KHz

Charge Current

ICHARGE

VCC = 5V ~ 40V

Discharge Current

IDISCHARGE

VCC = 5V ~ 40V

140

200

260

Discharge to Charge current ratio

IDISCHARGE

/ ICHARGE

Pin7 to VCC

5.2

6.5

7.5

Current Limit Sense Voltage

VIPK(SENSE)

IDISCHARGE = ICHARGE

250

350

Output switch (note1)

Saturation Voltage

VCE(SAT)

ISW= 1A, pin1, 8 connected

1.0

1.3

Saturation Voltage

VCE(SAT)

ISW= 1A, Id=50mA

0.45

0.7

DC current gain

HFE

ISW = 1A, VCE= 0.5V

Collector off-state current

IC(OFF)

VCE = 40V

0.01

100

Comparator

Threshold Voltage

VREF

1.225

1.25

1.275

Line regulation

REGLINE

VCC = 3V ~ 40V

Total device

Supply Current

ICC

VCC = 5V ~ 40V, CT = 1nF,

pin7= VCC, pin5> VTH,

pin2=Gnd, remaining pins

open

Notes1: Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient

temperature as possible

Note 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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