CM2500 查看數據表（PDF） - Champion Microelectronic

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CM2500

WIDE INPUT 2A STEP DOWN CONVERTER

Champion Microelectronic 

CM2500

WIDE INPUT 2A STEP DOWN CONVERTER

ELECTRICAL CHARACTERISTICS

(VIN = 12V, TA= 25°C unless otherwise specified.)

PARAMETER

Input Voltage

Feedback Voltage

High-Side Switch On Resistance

Low-Side Switch On Resistance

SW Leakage

Current Limit

COMP to Current Limit

Transconductance

Error Amplifier Transconductance

Error Amplifier DC Gain

Switching Frequency

Short Circuit Switching Frequency

Maximum Duty Cycle

Minimum Duty Cycle

Enable Threshold Voltage

Enable Pull Up Current

Supply Current in Shutdown

IC Supply Current in Operation

Thermal Shutdown Temperature

SYMBOL TEST CONDITIONS

MIN TYP MAX UNIT

VIN

VOUT = 5V, ILOAD = 0A to 1A

7

20

V

VFB

4.75V ≤ VIN ≤ 20V, VCOMP =1.5V 1.184 1.222 1.258 V

RONH

0.22

Ω

RONL

4.7

Ω

VEN = 0

1

10

μA

ILIM

2.6

3.3

A

GCOMP

1.8

A/V

GEA

AVEA

fSW

DMAX

ΔICOMP = ±10μA

300

VFB = 0

VFB = 1.1V

VFB = 1.4V

Hysteresis = 0.1V

2.0

Pin pulled up to 4.5V typically when

left unconnected

VEN=0

VEN=3V , VFB=1.4V

Hysteresis=10°C

550

3200

360

50

90

2.2

2.5

20

1.0

168

μA/V

V/V

420 kHz

kHz

%

0

%

V

uA

50

uA

1.5 mA

°C

2008/04/15 Rev1.0

Champion Microelectronic Corporation

Page 5

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