ZLED7000 Datasheet, PDF (1/18 Pages) List of Unclassifed Manufacturers – 40V LED Driver with Internal Switch

40V LED Driver with Internal Switch
ZLED7000
Datasheet
Brief Description
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.
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.
ZLED7000 Application Circuit
6 to 40 VDC
R_S
V_S
Features
• 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
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
5
D1 ₄
C1
V_IN
I_SENSE
1μF
ZLED7000
3
ADJ _GND
LX ¹
2
n LED
L1
47μH
* _{See section 2.3 and 1.4 for details}
© 2016 Integrated Device Technology, Inc.
1
April 20, 2016