SM8121A Datasheet, PDF (3/19 Pages) Nippon Precision Circuits Inc – White LED Driver IC

BLOCK DIAGRAM
SM8121A
SW
FB
VDD
Buff
PWM
COMP
ERR
AMP
VREF
RAMP
GENERATOR
CE
OSC
SOFT
START
VSS
PIN DESCRIPTION
Number
SOT23-5
SON-6
1
1
2
2, 5
3
6
4
4
5
3
1. Input with built-in pull-down resistor
Name
SW
VSS
FB
CE
VDD
I/O
Description
O
Coil switching
–
GND
I
Feed back (Output current detection)
Ip¹
Chip enable (High active)
–
Power supply
NIPPON PRECISION CIRCUITS INC.—3