µA

High-Accuracy Step-Down Controller

with Synchronous Rectifier for CPU Power

_______________________________________________________________________________________

3

SHDN, SKIP

SYNC

SYNC = 0V or 5V

SYNC = REF

Guaranteed by design

SYNC = 0V or 5V

SYNC = REF

2.0

V

VL - 0.5

Input High Voltage

%

93

96

89

91

Maximum Duty Cycle

kHz

195

340

Oscillator Sync Range

ns

200

SYNC Rise/Fall Time

ns

200

SYNC Low Pulse Width

ns

200

SYNC High Pulse Width

125

150

175

kHz

270

300

330

Oscillator Frequency

DL forced to 2V

SHDN, 0V or 30V

A

1

DL Sink/Source Current

2

SHDN, SKIP

SYNC

0.5

V

0.8

Input Low Voltage

DH forced to 2V, BST - LX = 4.5V

A

1

DH Sink/Source Current

High or low, BST - LX = 4.5V

High or low

Ω

7

DH On-Resistance

Ω

7

DL On-Resistance

CSH, CSL, CSH = CSL = 4V, device not shut down

SYNC,

SKIP

FB, FB = 1.6V

±100

nA

50

1

CONDITIONS

UNITS

MIN

TYP

MAX

PARAMETER

ELECTRICAL CHARACTERISTICS (continued)

µA

Input Current