NSL21610/1
Single-Channel 450mA Automotive Linear
LED Driver with Thermal Balancing
Datasheet (EN) 1.0
Full protections and diagnostics:
Product Overview
LED open-load detection with auto-recovery and
adjustable enable threshold
The NSL21610/1 is an automotive-grade single-channel
linear constant current LED driver, with up to 450 mA
current capability. Wide supply voltage up to 40 V
enables NSL21610/1 a good fit for automotive battery
directly powered application.
LED short-to-GND detection with auto-recovery
Flexible FAULT bus connection options: “all off if
one fails” and “others remain on if one fails”
Thermal shutdown
For linear-type constant current LED driver, thermal
dissipation limit is a common issue to prevent it to be
applicable for larger current conditions. By
implementing a unique thermal balancing design, the
NSL21610 is able to enlarge the output current capability
with an automatic power balancing loop between the
output channel and the external shunt resistor. It can
address the thermal dissipation limit issue effectively
with the majority of power conducted on the external
shunt resistor, instead of the device itself.
The NSL21610/1 is able to support full diagnostics
including the LED open-load and short-to-GND detection.
With different FAULT bus connections, the NSL21610/1
can realize either “all off if one fails” or “others remain on
if one fails”.
Applications
Automotive exterior rear lighting: position light, fog light,
stop light, tail light
Automotive miscellaneous exterior lighting: center high
mounted stop lamp, daytime-running lamp, turn
indicator, door handle, blind spot detection indicator
Automotive interior lighting: reading lamp, overhead
console
General-purpose LED driver applications
Device Information
Part
Number
Function
Description
Key Features
Package
Body Size
NSL21610 With SHUNT
AEC Q-100 Qualified for Grade 1: TA from −40 °C to 125 °C
HMSOP-8 3.0mm x 3.0 mm
NSL21611 Without SHUNT
5 V to 40 V wide supply voltage range
Single-channel high accuracy constant current with
PWM dimming
Typical Application
Automatic thermal balancing between device and
external shunt resistor (NSL21610 only)
5V-40V
Up to 450 mA current capability (NSL21610)
Up to 300 mA current capability (NSL21611)
Low dropout voltage : Max 350 mV at 100 mA
NSL21610
R3
EN
VS
RISET
R1
DEN
PWM
FAULT
IN
GND
OUT
EN control pin to enable/disable device for low power
operation
R4
SHUNT
R2
RSHUNT
10nF
RoHS & REACH Compliance
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