HA16120FP HITACHI [Hitachi Semiconductor], HA16120FP Datasheet - Page 4

• Manufacturer Part Number: HA16120FP
• Description: Switching Regulator for Chopper Type DC/DC Converter
• Manufacturer: HITACHI [Hitachi Semiconductor]

HA16114P/PJ/FP/FPJ, HA16120FP/FPJ
Block Diagram
4
Note: 1. The HA16120 has an AND gate.
reference
generator
bandgap
Vref
ADJ
voltage
GND
2.5V
16
1
V
IN
Triangle waveform
Latch reset pulses
SYNC
1.0 V
ON/OFF
ADJ
15
2
H
L
generator
1.6 V
UVL
OVP
V
L
Bias
current
V
1.1 V
H
R
from
UVL
UVL
output
T
DB
R
14
3
T
Latch
S
R
V
1k
0.3 V
IN
ON/OFF
Q
C
13
4
T
1k
PWM COMP
from
UVL
0.3V
+
+
IN( )
TM
12
5
+
EA
CL( )
E/O
11
6
CL
from
UVL
+
Vref
0.2 V
IN(+)
V
10
7
IN
OUT
NAND (HA16114)
*1
P.GND
OUT
9
8