el7551 Intersil Corporation, el7551 Datasheet - Page 6

• Manufacturer Part Number: el7551
• Description: Monolithic 1amp Dc Dc Step-down Regulator
• Manufacturer: Intersil Corporation

Typical Performance Curves
Block Diagram
EN
V
V
E
V
IN
O
O
N
Power-Down
V
Shut-Down
V
IN
IN
39:
=5V, V
=5V, V
0.1µF
O
O
=3.8V, I
=3.8V, I
VDD
6
SGND
O
O
=1A
=1A
Controller
Supply
Reference
Voltage
(Continued)
FB
VREF
0.1µF
Controller
Oscillator
PWM
Current
Sense
COSC
EL7551
270pF
Shut-down
Drivers
Thermal
Power
Power
V
V
V
FET
FET
i
IN
O
O
O
Releasing EN
V
Short-Circuit Protection
V
IN
IN
=5V, V
=5V
O
=3.8V, I
VDRV
VHI
VIN
PGND
O
=1A
0.1µF
10µH
47µF
2370:
1k:
V
OUT