Zetex is a leading provider of high performance, analog semiconductor products for signal processing and power management. The company designs and manufactures a broad range of standard and application focused linear integrated circuits and discrete semiconductor products using a wide variety of wafer processing technologies.


• 1.2V to 12V Input voltage range
• Up to 1A output current
• Typical efficiency# >85%
• Bootstrap operation enables input voltage down to 1V
• User-defined thermal control of LED output current using external thermistor
• High output current stability over input voltage and temperature
• 12μA typical standby current
• LED current adjustable from 100% down to 2%
• Adjustable soft-start
• Drives up to 5 white LEDs in series


• High power LED flashlights
• LED back-up lighting
• General LED lighting
• Emergency lighting

The ZXLD1321 is an inductive DC-DC converter, with an internal switch, designed for driving single or multiple LEDs in series up to a total of 1A output current. Applications cover commercial environments with input voltages ranging from 1.2V to 12V. The device includes the DC-DC converter, a high-side current monitor and an NPN switching transistor to provide an integrated solution offering small PCB size, competitive cost/performance, high power efficiency of DC-DC conversion and maximum LED brightness/reliability. External resistors set nominal average LED current and coil peak current independently. The device can be shut down by applying a continuous low level dc voltage to the ADJ pin.

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Mfr Part#: ZXLD1321DCATC
Mounting Method: Surface Mount
Package Style: DFN-14
Available In: Cut Tape

ZXLD1321 Series 1 A 12 V 600 kHz Boost Mode DC-DC Converter for LED - DFN-14


Technical Specifications:

Supply Voltage: Output Current per Channel: Switching Frequency-Max:
2 to 12 V 1 A 600 kHz
See the Download Center for a complete library of supporting documentation.


$4.62 USD (each)
1 - 4 $4.62
5 - 24 $4.57 (Save 1%)
25 - 124 $4.34 (Save 6%)
125 - 499 $3.55 (Save 23%)
500+ $2.47 (Save 47%)

Other quantities & packages (Reels) may also be available


Qty in Stock : 0
Reserve Stock:
Factory Stock: 0
Factory Lead-Time: N/A
Min. Order Qty: 1
Multiple of: 1
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Future Electronics offers this product to be custom packaged onto our production ready Mini-Reels.

Select the number of reels you require and the quantity of components to be placed on each reel.
1 is the minimum quantity and 3000 is the maximum quantity that can go on this Mini-Reel.
Number of Reels
Number of Components
No. of
Quantity per Reel Unit Price
inc. Reeling fee
Ext. Price
inc. Reeling fee
1 1 $11.6200 USD $11.62 USD
$7.00 reeling fee is amortized over the number of components to each reel. Mini-Reels are custom product and are non-cancelable and non-returnable