ZLED7025 Datasheet, PDF (1/26 Pages) Integrated Device Technology – Boost LED Driver

Boost LED Driver
ZSLS7025
Datasheet
Brief Description
The ZSLS7025, one of our ZSLS Family of LED
control ICs, is a constant current boost converter
designed for driving high-brightness LEDs. It is
optimal for driving multiple white LEDs connected
in series so that the LED current is uniform for
better brightness and color control. The wide input
range and high output current enables diverse
industrial, after-market automotive, and consumer
lighting applications.
The ZSLS7025 output current is adjustable via an
external current sense resistor and can deliver
stable constant output current from a few
milliamps up to 2A or higher.
The ZSLS7025 drives a constant current into the
load. The control loop features a pulse frequency
modulated (PFM) architecture that is inherently
stable and does not need loop compensation.
The ZSLS7025 supports pulse-width modulation
(PWM) or linear voltage dimming, which allows
flexible control of the LED luminance.
The ZSLS7025 can operate in applications with a
wide input voltage range from 5V to 100V. An
integrated over-voltage protection (OVP) circuit
protects the system, even under no-load
conditions. The over-voltage protection is
adjustable via external resistors R₁ and R₂.
Features
• Wide application input voltage range: 5V to
100V (Higher voltage supported. See section
2.1 in the data sheet.)
• Constant current output limited only by
external component selection
• No loop compensation required
• Internal over-voltage protection
• Internal over-temperature protection
• Brightness control via PWM or DC voltage
control signal input
• SOP-8 package
Benefits
• High efficiency: up to 95%
• Minimum bill of materials
• Small form-factor package
Available Support
• Demonstration Kit
Physical Characteristics
• Junction temperature: -40°C to 125°C
• RoHS compliant
V_IN =5 to 100 VDC
C_IN
R_VDD
C_VDD
L₁
ZSLS7025
VDD
GATE
TOFF
CS
ADJ
FB
GND
OVP
R_TOFF
ZSLS7025 Typical Application Circuit
D₁
Q₁
C_OUT
R₁
LED
String
R_CS
R₂
R_FB
© 2016 Integrated Device Technology, Inc.
1
April 20, 2016