BAT-54 National Semiconductor Corporation, BAT-54 Datasheet - Page 6

• Manufacturer Part Number: BAT-54
• Description: N-channel Fet Synchronous Buck Regulator Controller For Low Output Voltages
• Manufacturer: National Semiconductor Corporation

www.national.com
Typical Performance Characteristics
V
PWM Frequency (Si4826DY FET, T
CC
Operating Current Plus Boot Current vs
(in 100 to 800kHz range), T
Switch Waveforms (HG Rising)
R
FADJ
I
O
V
= 3A, F
IN
vs PWM Frequency
= 5V, V
SW
O
= 600kHz
= 1.8V
A
= 25˚C
A
= 25˚C)
20049424
20049420
20049418
6
(Continued)
(in 900 to 2000kHz range), T
Switch Waveforms (HG Falling)
C
R
SS
FADJ
V
I
V
Start-Up (No-Load)
O
IN
= 10nF, F
IN
= 3A, C
F
vs PWM Frequency
= 10V, V
= 5V, V
SW
= 600kHz
SS
SW
O
O
= 10nF
= 1.8V
= 1.2V
= 300kHz
A
= 25˚C
20049423
20049421
20049419