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Renesas Electronics Components Datasheet

ZLED7320 Datasheet

High Current 40V LED Driver

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High Current 40V LED
Driver with Internal Switch
ZLED7x20
Datasheet
Brief Description
Benefits
The ZLED7x20 continuous-mode inductive step-
down converter family is part of our line of LED-
control ICs. It is designed for applications requiring
high brightness and high current. It can efficiently
drive a single LED or multiple series-connected
LEDs from a voltage input higher than the LED for-
ward voltage: Vin = 6 to 40 VDC. It provides an
adjustable output current 1.2A, which is set via an
external resistor and controlled by the ZLED7x20’s
integrated high-side output current-sensing circuit
and high speed internal 40V power switch. An
external control signal, which can be a DC voltage,
PWM, or microcontroller-generated waveform, on
the ADJ pin can also be used to linearly adjust a
continuous output current or to control a gated out-
put current.
High efficiency: up to 98%
Single pin on/off and brightness control using
DC voltage or PWM
Very few external components needed for
operation
Footprint compatible with our ZLED7000
depending on the application.
Available Support
Evaluation Kit
Physical Characteristics
Operating junction temperature: -40°C to 125°C
Switching frequency: up to 1MHz
The output can be turned off by applying a voltage
lower than 0.2V to the ADJ pin, which puts the
ZLED7x20 in a low-current standby state.
The ZLED7x20 enables diverse industrial and
consumer lighting applications requiring high
driving currents, wide operating voltage range,
high efficiency, and variable brightness control. It
offers over-temperature and LED open-circuit pro-
tection. The ZLED7x20 can also minimize bill-of-
material costs because very few external com-
ponents are required for most applications. Only a
resistor, a diode, an inductor, and three capacitors
are needed for a typical basic application.
Features
ZLED7x20 Family Selection Matrix
Product
Max. Current Output Package
ZLED7020
1.2A
SOT89-5
ZLED7320
1.0A
DFN-5
ZLED7520
0.75A
DFN-5
ZLED7720
0.35A
DFN-5
ZLED7x20 Typical Application Circuit
Up to 1.2A output current
Vs = 6 to 40 VDC
Rs
Internal 40V power switch
Wide DC input voltage range 6 to 40 VDC
D1
Output current accuracy: 3% (typical)
Dimming ratio: 1200:1
LED open-circuit protection
Vin I SENSE
Thermal shutdown protection
(C1) C2
0.1µF
ZLED7x20
LX
ADJ
GND
L1
33µH to
220µH
(C3)
LED
String
© 2016 Integrated Device Technology, Inc.
1
April 20, 2016


Renesas Electronics Components Datasheet

ZLED7320 Datasheet

High Current 40V LED Driver

No Preview Available !

High Current 40V LED
Driver with Internal Switch
ZLED7x20
Datasheet
ZLED7x20 Block Diagram
6 to 40 VDC
VS
(C1)
C2
0.1µF
5
VIN
3
ADJ
Rs
4 ISENSE
Power
Supply,
Oscillator,
and Under-
Voltage
Detection
(UV)
VCC
VDDA
VDDD
UV
POR
VREF
ISENSE
VIN
ISENSE
And
Driver
500kΩ
Shutdown
SD
ISENSE
ZLED7X20
POR Trim
LX
D1
Power
MOS
DR
SD
(C3)
L1
1
LX 33µH to
220µH
n LED
GND 2
Typical Applications
Illuminated LED signs and other displays
LED street and traffic lighting (low voltage)
Architecture/building LED lighting
LED backlighting
Interior/exterior LED lighting
MR16 LED spot lights
Retrofit LED lighting fixtures
General purpose industrial and consumer LED applications
Ordering Information
Product Code Description
Package
ZLED7020ZI1R ZLED7020 – High Current (1200mA) 40V LED Driver with Internal Switch
SOT89-5 (Tape & Reel)
ZLED7320ZI1R ZLED7320 – High Current (1000mA) 40V LED Driver with Internal Switch
DFN-5 (Tape & Reel)
ZLED7520ZI1R ZLED7520 – High Current (750mA) 40V LED Driver with Internal Switch
DFN-5 (Tape & Reel)
ZLED7720ZI1R ZLED7720 – High Current (350mA) 40V LED Driver with Internal Switch
DFN-5 (Tape & Reel)
ZLED7020KIT-D1 ZLED7020-D1 Demo Board, 1 ZLED-PCB8 and 5 ZLED7020 ICs
Kit
ZLED-PCB8
Test PCB with a 5W white high brightness (HB) LED, cascadable to a multiple LED string Printed Circuit Board (PCB)
© 2016 Integrated Device Technology, Inc.
2
April 20, 2016


Part Number ZLED7320
Description High Current 40V LED Driver
Maker Renesas
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