HA16107P Datasheet, PDF (4/40 Pages) Hitachi Semiconductor – PWM Switching Regulator for High-performance Voltage Mode Control

HA16107P/FP, HA16108P/FP
Block Diagram
• HA16107P/FP
TL
E/O
IN (−)
NC
GND
IN (+)
ST
Vref
16
15
14
13
12
11
10
9
140 µA
−
EA Error amp.
+
16 µA
UVL1
H
L
V_L V_H
4 µA
RQ
S
On/Off latch
(V_TH = 7 V)
6.45 V
zener type
Ref.
voltage
Gen.
V_IN
34 V
UVL2
O
H
V
L
P
4V 5V
Vref
UVL2
UVL1
ST
+ + − PWM Comparator
Triangle waveform
UVL1 and UVL2
Pulse-by-pulse latch
Triangle waveform OSC
QCLM
QR
QS
OUT
V_C
V_E
Vref
Current
limiter
Triangle waveform
Latch reset pulse
ON duty pulse
3.4 V 10 µA
1
2
3
4
5
6
7
8
V_IN
OUT
CL (+)
V_E
CL (−)
R_T1
C_T
R_T2
• HA16108P/FP
ON/OFF
E/O
IN (−)
NC
GND
IN (+)
ST
Vref
16
15
14
13
12
11
10
9
140 µA
−
EA Error amp.
+
16 µA
UVL1
H
L
V_L V_H
4 µA
RQ
S
On/Off latch
(V_TH = 7 V)
V_IN
34 V
6.45 V
zener type
Ref.
O
voltage _V
Gen.
P
UVL2
H
L _{4V 5V}
Vref
UVL2
UVL1
ST
+ + − PWM Comparator
Triangle waveform
UVL1 and UVL2
Pulse-by-pulse latch
Triangle waveform OSC
QCLM
QR
QS
OUT
V_C
V_E
Vref
Current
limiter
Triangle waveform
Latch reset pulse
ON duty pulse
3.4 V 10 µA
1
2
3
4
5
6
7
8
V_IN
OUT
CL (+)
V_E
CL (−)
R_T1
C_T
R_T2
Note: Dotted lines apply to the SOP package model (pins 4, 5, and 13: ground)
Rev.4.00 Jun 15, 2005 page 4 of 39