Current Driver. BD18336NUF-M Datasheet

BD18336NUF-M Driver. Datasheet pdf. Equivalent

Part BD18336NUF-M
Description 1ch Constant Current Driver
Feature Datasheet 40 V 600 mA 1ch Constant Current Driver for Automotive LED Lamps BD18336NUF-M General D.
Manufacture ROHM
Datasheet
Download BD18336NUF-M Datasheet



BD18336NUF-M
Datasheet
40 V 600 mA 1ch Constant Current Driver
for Automotive LED Lamps
BD18336NUF-M
General Description
The BD18336NUF-M is a constant current driver IC for
driving automotive LED lamp, that can withstand up to 40
V. Small-size package is suitable for use in socket LED
driver applications.
The BD18336NUF-M offers high reliability with built-in
functions for the thermal de-rating function, the LED open
detection, the output short circuit protection, the SET pin
short circuit protection, the over-voltage mute function, the
current bypass function at reduced-voltage, the output for
fault flag function and the input for output current OFF
control signal.
Key Specifications
Input Voltage Range:
5.5 V to 20 V
Output Current Accuracy:
±5 %
Maximum Output Current:
400 mA (DC)
600 mA (ON Duty: 50 %)
Operating Temperature Tj:
-40 °C to +150 °C
Package
VSON10FV3030
W (Typ) x D (Typ) x H (Max)
3.0 mm x 3.0 mm x 1.0 mm
Features
AEC-Q100 Qualified(Note 1)
CR Timer for PWM Dimming
Thermal De-rating Function (THD)
LED Open Detection
Output Short Circuit Protection (OUT SCP)
SET Pin Short Circuit Protection (SET SCP)
Over Voltage Mute Function (OVM)
Current Bypass Function at Reduced-Voltage
Disable LED Open Detection Function
at Reduced-Voltage (OPM)
Output for Fault Flag / Input for Output Current OFF
Control Signal (PBUS)
(Note 1) Grade1
Applications
Automotive LED Exterior Lamps
(Rear Lamp, Turn Lamp, DRL/Position Lamp, Fog
Lamp)
Automotive Interior Lamps
(Air Conditioner Lamp, Interior Light, Cluster Light
etc.)
Typical Application Circuit
PWM
SW
DC
SW
D1
D2
D3
RDCIN CCRT
+B
RBP1
RBP2
CVIN
RCRT
RBP3
VIN OUT
BD18336NUF-M
CRT
EXP-PAD ISINK
DISC
THD
PBUS
SET
BPCNT
GND
COUT
RSET NTC
Product structure: Silicon integrated circuit
www.rohm.com
© 2019 ROHM Co., Ltd. All rights reserved.
TSZ22111 14 001
This product has no designed protection against radioactive rays.
1/35
TSZ02201-0T1T0B300310-1-2
25.Dec.2019 Rev.001



BD18336NUF-M
BD18336NUF-M
Pin Configuration
(TOP VIEW)
EXP-PAD
Pin Descriptions
Pin No.
Pin Name
Function
1 VIN Power supply input
2
BPCNT
Current bypass function at reduced-voltage setting(Note 1)
3
PBUS
Output for fault flag / Input for output current OFF control signal(Note 2)
4
CRT
CR timer setting 1(Note 3)
5
DISC
CR timer setting 2(Note 3)
6
THD
Thermal de-rating setting(Note 4)
7
SET
Output current setting(Note 1)
8
GND
GND
9
ISINK
Current sink pin for current bypass function at reduced-voltage
10
OUT
Current output
-
EXP-PAD
Heat radiation pad. The EXP-PAD is connected to GND.
(Note 1) Do not connect external capacitor.
(Note 2) Open the PBUS pin when not in use output for fault flag / input for output current OFF control signal.
(Note 3) Short the CRT pin to the VIN pin and open the DISC pin when in use at DC mode only.
(Note 4) Open the THD pin when not in use thermal de-rating function.
www.rohm.com
© 2019 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
2/35
TSZ02201-0T1T0B300310-1-2
25.Dec.2019 Rev.001





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