®
VN1160/
VN1160-1/ VN1160T
DIRECTION INDICATOR
DRIVER FOR MOTORBIKE
TARGET SPECIFICATION
TYPE
VN1160
VN1160-1
VN1160T
R
DS(on)
0.08
Ω
I
lim
12 A
V
CC
40 V
3
2
3
1
COMPLETE DIRECTION INDICATOR IN A 3
PIN PACKAGE
s
REQUIRES ONLY ONE EXTERNAL
CAPACITOR TO SET FLASHING FREQUENCY
s
DOUBLE FREQUENCY FLASHING IN LOW
LOAD CONDITIONS
s
CYCLE BY CYCLE OVERTEMPERATURE
SHUTDOWN
s
REVERSE BATTERY PROTECTION
s
1
2
TO-220
TO251 (IPAK)
3
1
TO252 (DPAK)
ORDER CODES
TO-252 (DPAK)
TO-251 (IPAK)
TO-220
VN1160
VN1160-1
VN1160T
DESCRIPTION
The VN1160, VN1160-1, VN1160T are a monolithic
device made by using STMicroelectronics VIPower
technology, intended for building a complete flashing unit
for two wheel vehicles. The device is connected between
the battery positive terminal (V
CC
pin) and a mechanical
switch to the right and/or left bulbs. As soon as the series
switch connects the OUT pin to the bulbs, the device
begins to turn on/off with a 50% duty cycle.
An external low voltage capacitor (220µF, 10V)
connected between the CEXT pin and the OUT pin
stores energy for powering the device during the ON
phase and sets the flashing frequency.
When a low load is detected (output current lower than
I
df
), flashing frequency is automatically doubled.
BLOCK DIAGRAM
V
CC
CEXT CAPACITOR
CHARGING
CEXT
SAWTOOTH
GENERATOR
CONTROL
LOGIC
OVERVOLTAGE
CLAMP
FLASHING FREQUENCY
REGULATION
POWER MOSFET
GATE DRIVER
CURRENT
LIMITER
OUT
REVERSE BATTERY
PROTECTION
LOW LOAD
DETECTION
JUNCTION
OVERTEMPERATURE
February 1999
1/10
1
ETC [ ETC ]
