HA16654A, HA16664A Series
PWM Controlled Switching Regulator
The HA16654A and HA16664A are PWM control switching regulator ICs which drive a power MOSFET
at high speed and high frequency. The standby current is limited to as small as 1.5 mA (typ). These
devices incorporate totem pole circuits suited for high-speed push-pull operation at the output stage,
accomplishing high-speed switching with rising time t
r
= 80 ns (typ) and falling time t
f
= 40 ns (typ) at 20
V swing.
Functions
Reference voltage circuit
Triangular waveform oscillation circuit
PWM comparator circuit
Low-input malfunction protection circuit
Output drive circuit
Soft start and quick shut down
Features
High speed switching: t
r
= 80 ns, t
f
= 40 ns (typ) when use exernal driver circuit
High frequency operation:
HA16654A (f = 100 kHz to 500 kHz)
HA16664A (f = 100 kHz to 200 kHz)
Low power dissipation : 2 mA max in standby state
5 V reference voltage
Low-input malfunction protection (High threshold voltage: 10 V Typ, Low threshold voltage: 8 V
Typ)
Adjustable dead band width
Enlarged output pulse width control range (0 to 80%)
Soft start and quick shut down functions
Single output: totem pole
HA16654A, HA16664A Series
4
Absolute Maximum Ratings (Ta = 25C)
Item
Symbol
Rating
Unit
Notes
Power supply voltage
V
IN
+40
V
Collector current (Push-pull)
I
O
20
mA
Comparator input voltage
V
COM
Vref + 0.3
V
R
T
input current
I
RT
1
mA
Power dissipation
P
T
680
mW
1, 2
Operation temperature range
Topr
20 to +85
C
Storage temperature range
Tstg
55 to 125
C
Notes: 1. Ta
45
C, if Ta > 45
C, derate by 8.3 mW/
C
2. Tjmax =
ja Pcmax + Ta (
ja:Thermal resistance between junction and atmosphere at set
board use)
The wiring density and the material of the set board must be chosen for thermal conductance of
efficacy board.
Electrical Characteristics
HA16654APS/AFP (Ta = 25C, V
IN
= 20 V, C
T
= 220 pF, R
T
= 27 k
at f 500 kHz)
Voltage Reference
Item
Symbol
Min
Typ
Max
Unit
Test Condition
Output voltage
Vref
4.75
5.00
5.25
V
Line regulation
Line
--
--
100
mV
V
IN
= 7.3 to 11 V
--
10
25
mV
V
IN
= 11 to 40 V
Load regulation
Load
--
5
16
mV
I
O
= 0 to 10 mA
Temperature stability
V
RTC
--
26
--
ppm/
C
Short circuit current
I
OS
10
35
--
mA
Vref = 0 V
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