Holtek HT2014L One lamp/led flash driver Datasheet

HT201XX
One Lamp/LED Flash Driver
Features
•
•
•
•
•
•
•
•
•
•
CMOS Metal-Gate Process Technology
Operating voltage: 1.2V~4.5V
Low standby current: 1µA Typ. at 3V
Built-in oscillator (FOSC: 32KHz)
ON/OFF control function for the HT2013H,
HT2013M, HT2013L
1/8 duty cycle output
Directly driving an LED
Minimum external components
TO-92 package (only for the HT2012H,
HT2014M, HT2014L)
Flash rate options:
– HT2013H → about 4Hz
– HT2012H → about 4Hz
(No ON/OFF control function)
– HT2013M → about 2Hz
– HT2014M → about 2Hz
(No ON/OFF control function)
– HT2013L → about 1Hz
– HT2014L → about 1Hz
(No ON/OFF control function)
General Description
tions on flashing badges, gift cards, flashing
earrings, and other products that require flashing lights.
The HT201XX series is a low cost, low power
CMOS LSI chip designed for lamp and LED
flash drivers. It can be operated without any
external components, thus suitable for applica-
Selection Table
Part No.
Flash Rate
ON/OFF Control
Yes
HT2013H
4Hz
HT2012H
4Hz
HT2013M
2Hz
HT2014M
2Hz
HT2013L
1Hz
HT2014L
1Hz
No
Package
TO-92
√
Dice
√
√
√
√
√
√
√
√
√
√
√
√
1
√
√
10th June ’97
HT201XX
Pin Assignment
Block Diagram
Pad Coordinates
Unit: mil
Pad No.
X
Y
1
–23.9
13.5
2
–24.13
–7.055
3
23.89
13.5
4
13.09
13.5
5
–15.89
13.5
Chip size: 60 × 38 (mil)2
*The IC substrate should be connected to VDD in PCB layout artwork.
Pad Description
Pad Name
I/O
Internal
Connection
1
VDD
—
—
Power supply (positive)
2
TEST
—
—
For IC test only
3
ON/OFF
I
CMOS
Pull-High
4
VSS
—
—
Power supply (ground)
5
OUT
O
NMOS
Open Drain
Lamp/LED flash output
Pad No.
Description
Lamp/LED flash ON/OFF control pad
2
10th June ’97
HT201XX
Absolute Maximum Ratings
Supply Voltage ..............................–0.3V to 5.5V
Storage Temperature................. –50°C to 125°C
Input Voltage................. VSS–0.3V to VDD+0.3V
Operating Temperature............... –20°C to 75°C
(Ta=25°C)
Electrical Characteristics
Symbol
Parameter
Test Condition
VDD
Condition
Min.
Typ.
Max.
Units
VDD
Operating Voltage
—
—
1.2
3
4.5
V
ISTB
Standby Current
3V
—
—
1
2
µA
IDD
Operating Current
3V
No load
—
200
500
µA
IOL
OUT Pad Sink Current
1.5V
VOL=0.15V
5
12
—
mA
3V
VOL=0.3V
10
30
—
mA
FOSC
System Frequency
—
32K
—
Hz
3V
—
Application Circuit
Chip form without ON/OFF control
Chip form with ON/OFF control
*The IC substrate should be connected to VDD in PCB layout artwork.
3
10th June ’97
HT201XX
Package form application
HT2012H
HT2014M
HT2014L
VSS
OUT
VDD
R=0~100Ω
VDD
4
10th June ’97
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