ZXLD1320DCATC 데이터 시트보기 (PDF) - Diodes Incorporated.

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ZXLD1320DCATC

Buck mode DC-DC converter for LED driving with 1.5A output and current control

Diodes Incorporated. 

ZXLD1320

DC-DC converter output parameters

Symbol

Toff(100)

Toff(10)

fLXmax

VOH(POK)

VOL(POK)

T(POK)

Parameter

Discharge pulse width

Discharge pulse width

Maximum operating

frequency

POK flag high level output

voltage

POK flag low level output

voltage

POK assertion delay time

Conditions

100% Output current

10% Output current

Min Typ Max Units

0.7 1.2 1.7 µs

4

8 12 µs

600 KHz

4V<VIN<18V

2

Output sourcing 0.3µA

Output sinking 1mA

0

VIN V

0.4 V

Switch permanently on 300 500 700 µs

Switching NPN transistor

Symbol

ISW

IBON(max)

IBON

V(BR)CE

VCE(sat)

hFE

COBO

t(on)

t(off)

Parameter

Conditions

Average continuous switch

current(b)

Maximum base current into 4V<VIN<18V

switch transistor from internal BIAS pin at 0V

drive circuit(c)

Base current into switch

transistor using external

resistor (RBASE) from BIAS pin

to ground

RBIAS = 1680Ω

Collector-Emitter breakdown IC=10µA

voltage

Collector-Emitter saturation

voltage

IC=0.1A, IB=10mA

IC=2A, IB=50mA(d)

Static forward current transfer IC=200mA, VCE=2V

ratio

IC=2A, VCE=2V

Output capacitance

VCB=10V,f=1MHz

Turn-on time

Ic=0 to IC=2A

VIN=10V

Turn-off time

IC=2A to Ic<100µA

Min Typ Max Units

1.5 A

30 50 70 mA

10

mA

20

V

50

mV

120

mV

209

116

64

pF

30

ns

28

ns

NOTES:

(b) Measured under pulse conditions.

(c) This current is measured via the collectors and emitters of the switch with these connected to ground (0V)

(d) Measured under pulse conditions. Peak Current = Ic

Issue 1 - January 2008

6

© Zetex Semiconductors plc 2008

www.zetex.com

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