HIT HA16666FP Datasheet

HA16666P/FP

600kHz PWM Controlled Switching Regulator

Description

The HA16666P/FP is a voltage mode PWM (pulse width modulation) control IC for switching regulator
control. It can drive a power MOS FET efficiently on 600 kHz. Its stanby current is 0.3 mA (max), and it is
used as the primary control power supply.

Functions

• +5 V reference voltage circuit

• Triangular waveform oscillator

• PWM comparator

• Output circuit (Totem pole output)

• Overcurrent protection circuit (with one-pulselatch mode)

• Undervoltage lockout protectoin circuit

• Soft start and quick shutdown function

• Remote control function

• Comparator with internal 1.3 V reference voltage

Features

• High-speed switching;

tr = 80 ns (15 V amplitude)
tf = 40 ns (15 V amplitude)

• Low power dissipation;

0.3 mA max in standby state
12 mA max in operation state (VIN = 15 V)

• Dual-slope highly accurate dead-band duty setup circuit; Setup accuracy Du = ±3% (max)

• Wide output pulse width control range; 0 to 75%

HA16666P/FP

• Undervoltage lockout protection;

VIN high threshold voltage 10 V typ
VIN low threshold voltage 8 V typ

• Two input threshold voltage for overcurrent protection cmparator;

fixed voltage (1.3 V)
variable voltage

• Double pulse output protection by overcurrent protection circuit with one-pulse latch mode

• Wide input supply voltage range; VCC = 11 to 40 V

Ordering Information

Type Package

HA16666P DP-16
HA16666FP FP-16DA

2

Pin Arrangement

HA16666P/FP

E/I
ST
C

R

T1

R

T2

OSC Out

GND

N.C

1
2
3

T

4
5
6
7
8

16
15
14
13
12
11
10

9

N.INV

–

INV
CS
Vref
V

IN

RM
OUT
N.C

+

(Top View)

Pin Functions

Pin No. Symbol Descreption

1 E/I Error input
2 ST Soft start
3C

T

4RT1Timing resistor (rise section)
5RT2Timing resistor (fall section)
6 OSC Out Triangular waveform oscillator
7 GND Ground
8 N.C No connect
9 N.C No connect
10 OUT Pulse output
11 RM Remote control
12 V

IN

13 Vref Reference voltage (5 V) output
14 CS Comparator input (–) with reference voltage (1.3 V)
15 INV
16 N.INV

–

+

Timing capacitance

Power supply voltage

Comparator input (–) for overcurrent protection
Comparator input (+) for overcurrent protection

3

HA16666P/FP

Block Diagram

E/I

ST

C

R

T1

R

T2

OSC Out

GND

N.C

+

1

2

3

T

4

5

6

7

89

PWM

+

comparator

–

R

Triangular
waveform

oscillator

S
S/R

Flip-flop

Output driver

current

detector

Comparator

Reference

voltage

Undervoltage

lockout

protection

Over-

1.3 V
5 V

+

16

–

15

–

14

+

13

12

11

10

N.INV

INV

CS

Vref

V

IN

RM

OUT

N.C

+

–

4

HA16666P/FP

Absolute Maximum Ratings (Ta = 25°C)

Rating

Item Symbol HA16666P HA16666FP Unit

Power supply voltage V
Output current DC I

(Push-pull)

Peak I
Error input V
OSC input voltage V
CS input voltage V
RM input voltage V
RT2 input current I
RT1 input current I
Power dissipation P

IN

O(DC)

O(peak)

EI

OSC

CS

RM

R2

R1

T

Operation temperature Topr –20 to +85 –20 to +85 °C
Storage temperature Tstg –55 to +125 –55 to +125 °C

Notes: 1. Value at 300 ns of switiching time

2. Value at Ta ≤ 45°C. If Ta > 45°C, derated by 8.3 mW/°C

3. Value under the condition of 40 mm × 40 mm × 0.8 t ceramics board epoxy board

+40 +40 V
100 100 mA
500*1 500*

1

mA
Vref Vref V
VIN – 3V

BE

VIN – 3V

BE

V
Vref Vref V
V

IN

V

IN

V
11mA
11mA
680*

2

680*

3

mW

Electrical Characteristics (VIN = 15 V, Ta = 25°C, fosc = 300 kHz)

Item Symbol Min Typ Max Unit Test Condition

Voltage Output voltage Vref 4.75 5.00 5.25 V no load
reference

Triangular Maximum frequency f
waveform
oscillator

Line regulation Line — 50 100 mV V

= 11 to 40 V

IN

Load regulation Load — 9 20 mV IO = 0 to 10 mA
Temperature stability V
Short circuit current I

Minimum frequency f
Frequency accuracy f
Voltage stability f
Temperature coefficient

of frequency

RTC

OS

max

min

der

T

f

i

— +60 — ppm/°C no load
10 35 — mA Vref = 0 V
600 — — kHz CT = 150 pF
— — 1 kHz CT = 0.15 µF
–10 0 +10 %
— 1 — % 11 V≤ VIN ≤ 40 V
— 2 — % –20°C ≤ Ta

≤ +85°C

5