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
Absolute Maximum Ratings
(Ta = 25°C)
Item
Power supply voltage
Collector current (Push-pull)
Comparator input voltage
R
T
input current
Power dissipation
Operation temperature range
Storage temperature range
Symbol
V
IN
I
O
V
COM
I
RT
P
T
Topr
Tstg
Rating
+40
20
Vref + 0.3
1
680
–20 to +85
–55 to 125
Unit
V
mA
V
mA
mW
°C
°C
1, 2
Notes
Notes: 1. Ta
≤
45°C, if Ta > 45°C, derate by 8.3 mW/°C
2. Tjmax =
θj–a
• Pcmax + Ta (θj–a: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 = 25°C, V
IN
= 20 V, C
T
= 220 pF, R
T
= 27 kΩ at f 500 kHz)
Voltage Reference
Item
Output voltage
Line regulation
Symbol
Vref
Line
Min
4.75
—
—
Load regulation
Temperature stability
Short circuit current
Load
V
RTC
I
OS
—
—
10
Typ
5.00
—
10
5
–26
35
Max
5.25
100
25
16
—
—
Unit
V
mV
mV
mV
ppm/°C
mA
Vref = 0 V
V
IN
= 7.3 to 11 V
V
IN
= 11 to 40 V
I
O
= 0 to 10 mA
Test Condition
4