CS5127GDW16 datasheet(3/24 Pages) CHERRY

Part #	CS5127GDW16

Description	Dual Output Nonsynchronous Buck Controller with Sync Function and Second Channel Enable

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Manufacturer	CHERRY [Cherry Semiconductor Corporation]

Direct Link	http://www.cherrycorp.com/

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3

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Electrical Characteristics: 0¡C < TA < 70¡C; 0¡C < TJ < 125¡C; 9.4V < VIN < 20V; CT = 330 pF; RT = 27k½;

unless otherwise stated.

s Error Amplifiers

VFB Reference Voltage

VCOMP = VVFB

1.245

1.275

1.300

V

Input Bias Current

VFB = 1.275V

0.1

1.0

µA

Open Loop Gain

85

dB

Unity Gain Bandwidth

1.0

MHz

PSRR

f = 120Hz

80

dB

COMP Source Current

VCOMP = 3V, VVFB = 1.1V

0.9

1.3

2.0

mA

COMP Sink Current

VCOMP = 1.2V, VVFB = 1.45V

10

16

24

mA

COMP Output Low Voltage

VVFB = 1.45V, ICOMP = 0.3 mA

0.50

0.85

1.00

V

s PWM Comparators

VFFB Bias Current

VFFB = 0

2.0

20

µA

Propagation Delay

VFFB rising to VGATE falling

100

250

ns

Common Mode

2.9

3.3

V

Maximum Input Voltage

s ENABLE Lead

ENABLE High Threshold

channel 2 enabled

1.5

2.5

3.5

V

ENABLE Bias Current

VENABLE = 0

100

250

400

µA

s Gate Driver Outputs

Output Low Saturation Voltage

IGATE = 20 mA

0.1

0.4

V

IGATE = 100 mA

0.25

2.50

V

Output High Saturation Voltage

IGATE = 20 mA

1.5

2.0

V

IGATE = 100 mA

1.6

3.0

V

Output Voltage under Lockout

VIN = 6V, IGATE = 1 mA

0.1

0.2

V

Output Rise Time

no load

30

ns

Output Fall Time

no load

10

ns

s Undervoltage Lockout

Turn On Threshold

7.4

8.4

9.4

V

Turn Off Threshold

6.8

7.8

8.8

V

s Supply Current

Start Up Current

VIN = 6V

0.4

0.8

mA

Operating Current

VCT = 0V, no load

17.5

25

mA

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