IS31BL3212-STLS2-TR ISSI, IS31BL3212-STLS2-TR Datasheet

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IS31BL3212-STLS2-TR

Manufacturer Part Number
IS31BL3212-STLS2-TR
Description
LED Lighting Drivers 4-Ch Constant Current LED Drvr
Manufacturer
ISSI
Datasheet

Specifications of IS31BL3212-STLS2-TR

Maximum Supply Current
1 mA
Output Current
23 mA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
DFN-8
Factory Pack Quantity
3000
IS31BL3212
FOUR CHANNEL CONSTANT CURRENT LED DRIVER
GENERAL DESCRIPTION
The IS31BL3212 provides four regulated current
sources, delivers up to 23mA of load current to
accommodate four white LEDs. It requires no charge
pump, has no noise and significantly improved the
efficiency.
The serial digital input is used to enable, disable, and
set current for each LED with 16 settings down to
0.69mA. A low-current shutdown feature disconnects
the load from the input and reduces quiescent current
typically 1.0mA.
The IS31BL3212 is available in a Pb-free,
space-saving 2mm×2mm DFN-8 and SOT23-6
package.
TYPICAL APPLICATION CIRCUIT
Note: If less than four LEDs connected, the left pin can be floating or connected to GND. Connecting to GND is recommended.
Integrated Silicon Solution, Inc. – www.issi.com
Rev.B, 01/10/2013
Figure 2 Application Circuit for Less Than 4 LEDs
Figure 1 Typical Application Circuit
FEATURES
APPLICATIONS
Ultra low headroom voltage
Cost effective LED driver
Four channel constant current output ideal for
driving LEDs
Best noise and efficiency performance
Ultra low quiescent supply current: 1.0mA (typ.)
Highly integrated design, minimal component
Low shutdown current: 1.0μA (typ.)
White LED display backlights
White LED keypad backlights
Cell Li-ion battery-operated equipment including
PDAs, hand-held PCs, cellular phone
January 2013
1

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IS31BL3212-STLS2-TR Summary of contents

Page 1

... LED with 16 settings down to 0.69mA. A low-current shutdown feature disconnects the load from the input and reduces quiescent current typically 1.0mA. The IS31BL3212 is available in a Pb-free, space-saving 2mm×2mm DFN-8 and SOT23-6 package. TYPICAL APPLICATION CIRCUIT Figure 2 Application Circuit for Less Than 4 LEDs Note: If less than four LEDs connected, the left pin can be floating or connected to GND. Connecting to GND is recommended. Integrated Silicon Solution, Inc. – ...

Page 2

... IS31BL3212 PIN CONFIGURATION Package Pin Configuration (Top View) DFN-8 EN/SET SOT23-6 GND VCC PIN DESCRIPTION No. Pin DFN-8 SOT23 D3~D1 2~4 6~4 VCC 5 3 GND 6 2 EN/SET Thermal Pad - Integrated Silicon Solution, Inc. – www.issi.com Rev.B, 01/10/2013 Description White LED channel ...

Page 3

... Package IS31BL3212-DLS2-TR DFN-8, Lead-free IS31BL3212-STLS2-TR SOT23-6, Lead-free Copyright © 2013 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any  time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are  ...

Page 4

... EN/SET pull down resistor EN/SET DOWN Note 1: The IS31BL3212 is production tested at room temperature but guaranteed to meet performance specifications over other temperature range by design, characterization, and correlation with statistical process controls. Note 2: See PCC wire Serial Interface section in application information for more. ...

Page 5

... IS31BL3212 FUNCTIONAL BLOCK DIAGRAM VCC BG EN/SET Integrated Silicon Solution, Inc. – www.issi.com Rev.B, 01/10/2013 IBias Output EN Data D1~D4 GND 5 ...

Page 6

... IC to manage LED or display brightness, allowing the user to "set it and forget it." With its high-speed serial interface (1MHz data rate), the output current of the IS31BL3212 can Integrated Silicon Solution, Inc. – www.issi.com Rev.B, 01/10/2013 be changed successively to brighten or dim LEDs, in smooth transitions (e ...

Page 7

... The drive current will automatically scale down to reduce the LED current consumption. INPUT CAPACITOR SELECTION The IS31BL3212 is designed to run off of a fixed input voltage. Depending on the stability and condition of this voltage rail, it may be necessary to add a small input capacitor to help filter out any noise that may be present on the line ...

Page 8

... IS31BL3212 CLASSIFICATION REFLOW PROFILES Profile Feature Preheat & Soak Temperature min (Tsmin) Temperature max (Tsmax) Time (Tsmin to Tsmax) (ts) Average ramp-up rate (Tsmax to Tp) Liquidous temperature (TL) Time at liquidous (tL) Peak package body temperature (Tp)* Time (tp)** within 5°C of the specified classification temperature (Tc) Average ramp-down rate (Tp to Tsmax) Time 25° ...

Page 9

... IS31BL3212 PACKAGE INFORMATION DFN-8 Integrated Silicon Solution, Inc. – www.issi.com Rev.B, 01/10/2013 9 ...

Page 10

... IS31BL3212 SOT23-6 Note: All dimensions in millimeters unless otherwise stated. Integrated Silicon Solution, Inc. – www.issi.com Rev.B, 01/10/2013 10 ...

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