ZLED7015
1.0MHz Boost Converter
with Internal 35V Switch
Datasheet
Brief Description
Features
• Integrated 35V power switch
• Wide input range: 6VDC to 30VDC
• Over-temperature protection
The ZLED7015, one of our ZLED family of LED
control ICs, is a constant current boost converter
with an internal high-power 35V switch. It is opti-
mal for driving multiple white LEDs connected in
series so that the LED current is uniform for better
brightness and color control. It can also drive
devices that require a constant voltage and is
capable of operating efficiently with voltage
supplies ranging from 6VDC to 30VDC. It is ideal
for diverse lighting applications requiring low sup-
ply voltages such as SELV applications. Typically,
smaller, less expensive external components can
be used since the ZLED7015 switches at 1.0MHz
(typical).
• Over-voltage (open LED string) protection adjusted
via external resistor divider
• Under-voltage lockout ensures reliable circuit
operation
• Control of output current during start-up via internal
“soft-start”
• Switching frequency: 1.0MHz
• Single pin on/off or brightness control via PWM,
microcontroller, or DC voltage control signal input
• MSOP-10 package
The ZLED7015 output current is adjustable via an
external current sense resistor RS connected from
the FB pin to ground.
Benefits
• High efficiency: up to 95% efficiency
• Few small, low-profile components needed for
operation
The ZLED7015 improves efficiency and minimizes
power losses in the current setting resistor RS by
use of an internal 0.3V feedback reference vol-
tage.
• Small form-factor package
Available Support
Dimming can be controlled using a pulse-width
modulation (PWM) waveform or a DC voltage
applied to the FB pin.
• Evaluation Kit
Physical Characteristics
The ZLED7015 provides a “soft-start” function to
prevent excessive in-rush current on start-up and
ensures a controlled rise of the output voltage.
• Operating temperature: -40°C to 85°C
• RoHS-compliant
Over-voltage protection is adjustable via external
resistors R1 and R2.
ZLED7015 Typical Application Circuit
VIN = 6 to 30 VDC
VOUT
L1
D1
REN
R1
CIN
LED
String
C2
EN
LX
RVDD
C1
VDD
OVP
R2
COVP
COUT
FB
VP
CVDD
ZLED7015
AGND
PGND
CVP
RS
© 2016 Integrated Device Technology, Inc.
1
April 20, 2016