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SP34063A

1.5A Buck/Boost/Inverting DC-DC Switching Regulator

Unspecified 

ELECTRICAL CHARACTERISTICS

Unless otherwise noted, the following specifications apply for VCC = +5.0V, TA = -40 to 85°C.

PARAMETER

SYMBOL MIN. TYP. MAX. UNITS

CONDITIONS

Oscillator

Frequency

F

OSC

30

38

45

Charge Current

ICHG

30

38

45

Discharge Current

IDISCHG

180 240 290

Discharge to Charge Current

Ration

IDISCHG/ICHG

5.2

6.5

7.5

KHz

VPin 5 = 0V, CT = 1.0nF

TA = 25ºC

µA

VCC = 5.0V to 36V,

TA = 25ºC

µA VCC = 5.0V to 36V,

TA = 25ºC

Pin 7 to VCC,TA = 25ºC

Current Limit Sense Voltage

Output Switch (note 1)

VIPK(sense)

250 300 350

mV ICHG = IDISCHG, TA = 25ºC

Saturation Voltage, Dalington

Connection VCE(sat)

VCE(SAT)

-

1.0 1.3

V

ISW = 1.0A, Pins 1, 8

connected

Saturation Voltage (note 2)

DC Current Gain

Collector Off-State Current

Comparator

VCE(SAT)

hFE

IC(off)

- 0.45 0.7

50 75

-

-

0.01 100

V

ISW = 1.0A, RPin 8 = 82 to

VCC, Forced β = 20

ISW = 1.0A, VCE = 5.0V,

TA = 25ºC

µA VCE = 36V

Threshold Voltage

Threshold Voltage Line

Regulation

1.225 1.250 1.275

TA = 25ºC

VTH

V

1.21 1.250 1.29

TA = -40ºC to 85ºC

REGLINE

1.4

5

mV VCC = 3.0V to 36V

Input Bias Current

IIB

-20 -400

nA VIN = 0V

Total Device

Supply Current

ICC

VCC = 5.0V to 36V, CT =

4

mA 1.0nF,

Pin 7 = VCC, VPin 5 > VTH

Note 1: Low duty cycle pulse techniques are used during the test program 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 2.0µs for it to come out of saturation. This condition will shorten the off time at frequencies above 30KHz, and is magnified

at high temperatures. 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 β of output switch:

IC Output

≥ 10

IC driver - 7.0mA*

*The 100Ω resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.

Date: 11/29/05

SP34063A 1.5A Buck/Boost/Inverting DC-DC Switching Regulator

3

© Copyright 2005 Sipex Corporation

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