ZLED7000
40V LED Driver with Internal Switch
Datasheet
Brief Description
Features
The ZLED7000, one of our ZLED Family of LED control
ICs, is an inductive step-down converter that is optimal
for driving a single LED or multiple LEDs (connected in
series) from a voltage source greater than the voltage
rating of the LED. The ZLED7000 operates in continu-
ous mode. Capable of operating efficiently with voltage
supplies ranging from 6 VDC to 40 VDC, it is ideal for
low-voltage lighting applications. The ZLED7000
minimizes current consumption by remaining in a low-
current standby mode (output is off) until a voltage of
≥0.3V is applied to the ADJ pin.
• Capable of up to 95% efficiency*
• Operates in continuous mode with a wide input
range from 6 VDC to 40 VDC
• Integrated 40V power switch
• One pin on/off or brightness control via PWM or DC
voltage control signal input
• Switching frequency: ≤ 1MHz
• Dimming rate: 1200:1 (typical)
• Output current accuracy: 5% (typical)
• Built-in thermal shutdown and open-circuit protection
In operating mode, the ZLED7000 can source LEDs with
an output current of ≤ 750mA (≤ 30 watts of output
power) that is externally adjustable.* The ZLED7000’s
integrated output switch and high-side current sensing
circuit use an external resistor to adjust the average
output current. Linearity is achieved via an external
control signal at the ZLED7000’s ADJ pin, implemented
either as a pulse-width modulation (PWM) waveform for
a gated output current or a DC voltage for a continuous
current.
for LED
• Very few external components needed for operation
• Broad range of applications: outputs up to ≤750mA
• SOT89-5 package
Application Examples
• Illuminated LED signs and other displays
• LED traffic and street lighting (low-voltage)
• Architectural LED lighting, including low-voltage
applications for buildings
• Halogen replacement LEDs (low-voltage)
• LED backlighting
• General purpose exterior and interior LED lighting,
including applications requiring low-voltage
• General purpose low-voltage industrial applications
ZLED7000 Application Circuit
6 to 40 VDC
RS
VS
D1
5
4
n LED
C1
1μF
VIN
ISENSE
ZLED7000
L1
3
1
LX
ADJ
GND
47μH
2
* See section 2.3 and 1.4 for details
© 2016 Integrated Device Technology, Inc.
1
April 20, 2016