Diodes Incorporated

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ZLDO1117 (Not Recommended for new design)

NRND = Not Recommended for New Design

High current, Wide Vin, 1 Amp LDO

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ZLDO1117 is a low dropout positive adjustable or fixed-mode regulator with 1A output current capability.  The ZLDO1117 has a 2% tolerance across the industrial temperature range and is guaranteed to have lower than 1.2V dropout at full load current making it ideal to provide well-regulated outputs of 1.2V to 
5.0V with input supply voltages up to 18V.  
The ZLDO1117 is ideally suited to provide well-regulated supplies for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply across the whole industrial temperature range.


  • DSP, FPGA and Microprocessor Power Supplies
  • Output Voltages:1.2V, 1.5V,1.8V, 2.5V 3.3V and 5.0V
  • Stable with a Ceramic Output Capacitor
  • Dropout Voltage: 400mV@1.5A
  • Low Quiescent Current
  • Over Temperature Shutdown
  • Short Circuit Protection
  • Low Temperature Coefficient
  • Pb-Free Packages

Product Specifications

Product Parameters

Accuracy 25C 1%
Adj. Vout (V) 1.25 to 15
Adjust VFB 1.25
Adj. Vout 1.25,15
Adjustable VFB (V) 1.25
Automotive Compliant and PPAP capable no
Compliance (Only Automotive supports PPAP) ZLDO1117Q
Channels 1
Compliance (Only Automotive supports PPAP) Standard
Dropout Voltage Max (V) 1.3
Features High current,Wide Vin
Fixed Vout (V) 1.2, 1.5, 1.8, 2.5, 3.3, 5.0
Fixed Vout(V) 5.0, 3.3, 2.5, 1.8, 1.5, 1.2
Fixed Vout(V) 5.0,3.3,2.5,1.8,1.5,1.2
Iout (A) 1
IQ (mA) 4000
Iq (max) (µA) 10000
Iq (max) (µA) 10000
Iq (max) (µA) 5000
Iq (typ) (µA) 4000
Iq (typ) (µA) 4000
OperatingInputVoltage Max (V) 18
OperatingInputVoltage Min (V) 2.7
Operating Temperature (ºC) N/A
Operating Temperature (Ambient) (°C) -40 to 125
Operating Temperature -40 to 125
Output Current (mA) 1
Output Discharge no
Output options Adjustable & Fixed
Output Voltage (V) 5, 3.3, 2.5, 1.8, 1.5, 1.2, ADJ
PSRR (dB) 1K Hz 80
PSRR (dB) 1kHz 80
AEC Qualified Yes
Quiescent Current Typ (mA) 4000
VCTL Function no
VDROPOUT (Max) 1.35
VDROPOUT (Max) (V) at Max Current and Max Ouput Voltage 1.35
VDROPOUT (Max) (V) at Max Current and Max Voltage 1.35
VDROPOUT (Max)(V) at Max Current and Max Voltage 1.35
VIN (Max) 20
Vin (Max) (V) 20
VIN (Min) 1.4
Vin (Min) (V) 1.4
VOUT 5, 3.3, 2.5, 1.8, 1.5, 1.2, ADJ
Vout (max) 20
Vout (min) 1.25

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Recommended Soldering Techniques



Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site