MP24830 Datasheet: Programmable Frequency White LED Driver





MP24830 Programmable Frequency White LED Driver Datasheet

Part Number MP24830
Description Programmable Frequency White LED Driver
Manufacture MPS
Total Page 16 Pages
PDF Download Download MP24830 Datasheet PDF

Features: The Future of Analog IC Technology MP24 830 4.5V – 90V, Programmable Frequenc y White LED Driver DESCRIPTION The MP2 4830 is a 90V white LED driver suitable for either step-down or inverting step -up/down applications. It supports a wi de input range with excellent load and line regulation. Its programmable curre nt limit provides customized applicatio ns with a wide power range. Current mod e operation provides a fast transient r esponse and eases loop stabilization. F ault condition protection includes ther mal shutdown, cycle-by-cycle peak-curre nt limiting, open-string protection, an d output short-circuit protection. The MP24830 incorporates both DC and PWM di mming onto a single control pin. The se parate input reference ground pin allow s for direct enable and/or dimming cont rol for a positive-tonegative power con version. The MP24830 requires a minimal number of readily-available external c omponents. It is available in 14-pin SO IC and QFN packages. TYPICAL APPLICATION FEATURES • Programmable.

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The Future of Analog IC Technology
MP24830
4.5V – 90V, Programmable Frequency
White LED Driver
DESCRIPTION
The MP24830 is a 90V white LED driver
suitable for either step-down or inverting
step-up/down applications. It supports a wide
input range with excellent load and line
regulation. Its programmable current limit
provides customized applications with a wide
power range. Current mode operation provides
a fast transient response and eases loop
stabilization. Fault condition protection includes
thermal shutdown, cycle-by-cycle peak-current
limiting, open-string protection, and output
short-circuit protection.
The MP24830 incorporates both DC and PWM
dimming onto a single control pin. The separate
input reference ground pin allows for direct
enable and/or dimming control for a positive-to-
negative power conversion.
The MP24830 requires a minimal number of
readily-available external components. It is
available in 14-pin SOIC and QFN packages.
TYPICAL APPLICATION
FEATURES
Programmable Maximum Output Current
Unique Step-Up/Down Operation (Buck-
Boost Mode)
Wide 4.5V-to-90V Operating Input Range
for Step-Down Applications (Buck Mode)
Adjustable Switching Frequency
Analog and PWM Dimming
0.2V Reference Voltage
10μA Shutdown Mode
No Minimum LED Quantity Required
Stable with Low ESR Output Ceramic
Capacitors
Cycle-by-Cycle Over-Current Protection
Thermal Shutdown Protection
Open-String Protection
Output Short-Circuit Protection
Available in 14-Pin SOIC and QFN
Packages
APPLICATIONS
General LED Illumination
Automotive LED Lighting
LCD Backlight
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For
MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
VIN C1
DIM
EN
3 VDD
BST 13
C2
MP24830
5 DIM
6 EN
U1
Rcs
CS 2
DR 1
Q1
SW 14
INGND
4 INGND
12 VSS
OVP
DIMO
FB
8
11
10
RSET COMP
79
C3
100pF
R6
100k
C4
4.3nF
R3
4.7k
C5
1nF
D1
R9
499k
R10
C9
22pF
LED+
LED-
Q2
Si4100DY
D2
R7
MP24830 Rev. 1.02
www.MonolithicPower.com
4/29/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
1

                    
                    






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