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AP5726WG-7

White LED Step-Up DC/DC Converter

The AP5726WG-7 is a white led step-up dc/dc converter from Diodes Incorporated. View the full AP5726WG-7 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

Manufacturer

Diodes Incorporated

Category

White LED Step-Up DC/DC Converter

Package

SOT26, TSOT23-6, DFN2020C-6

Key Specifications

ParameterValue
Efficiency84% (typical)
Feedback Voltage0.31V (typical)
Shutdown Current0.1 µA (typical)
Quiescent Current500 µA (typical)
Input Voltage Range2.7V to 5.5V
Switching Frequency1.2 MHz (typical)
Maximum Switching Current Limit750 mA (typical)
Operating Ambient Temperature Range-40°

Overview

Part: AP5726 — Diodes Incorporated

Type: Step-up DC/DC Converter

Description: The AP5726 is a step-up DC/DC converter designed to drive 2 to 6 white LEDs in series from a Li-Ion cell, featuring a 1.2MHz switching frequency and 84% typical efficiency.

Operating Conditions:

  • Supply voltage: 2.7–5.5 V
  • Operating temperature: -40 to 125 °C (Junction Temperature)
  • Switching frequency: 1.2 MHz (Typ.)
  • Feedback voltage: 0.31 V (Typ.)

Absolute Maximum Ratings:

  • Max supply voltage (VIN): 7 V
  • Max continuous current: 750 mA (Switching Current Limit)
  • Max junction temperature: 150 °C
  • Max storage temperature: -65 to +150 °C

Key Specs:

  • Operating Input Voltage (VIN): 2.7 V (Min) to 5.5 V (Max)
  • Under Voltage Lockout (UVLO): 2.2 V (Typ)
  • Quiescent Current (IQ): 500 μA (Typ, No Switching)
  • Shutdown Current (ISD): 0.1 μA (Typ, VEN < 0.4V)
  • Operation Frequency (FOSC): 1.2 MHz (Typ)
  • Feedback Voltage (VFB): 0.31 V (Typ)
  • On Resistance of MOSFET (Rds(on)): 0.95 Ω (Typ)
  • Switching Current Limit (IOCP): 750 mA (Typ)
  • OVP Threshold: 30 V (Typ)

Features:

  • High efficiency: 84% typical
  • Fast 1.2MHz switching frequency
  • Current limit and UVLO protections
  • Internal Thermal Shutdown
  • Internal Over Voltage Protection
  • Integrated soft-start function
  • SOT26, TSOT23-6 and DFN2020C-6: Available in 'Green' Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant

Applications:

  • Cellular Phones
  • PDAs, Hand help Computers
  • Digital Cameras
  • MP3 Players
  • GPS Receivers

Package:

  • SOT26
  • TSOT23-6
  • DFN2020C-6

Features

  • High efficiency: 84% typical
  • Fast 1.2MHz switching frequency
  • Current limit and UVLO protections
  • Internal Thermal Shutdown
  • Internal Over Voltage Protection
  • Integrated soft-start function
  • SOT26, TSOT23-6 and DFN2020C-6: Available in 'Green' Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant (Note 1)

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead\_free.html .

Applications

  • Cellular Phones
  • PDAs, Hand help Computers
  • Digital Cameras
  • MP3 Players
  • GPS Receivers

Pin Configuration

Electrical Characteristics

SymbolParameterConditionsMinTyp.MaxUnit
System Supply InputSystem Supply InputSystem Supply InputSystem Supply InputSystem Supply InputSystem Supply InputSystem Supply Input
V INOperating Input Voltage2.7-5.5V
UVLOUnder Voltage Lockout-2.22.4V
Under Voltage Lockout Hysteresis-85-mV
I QQuiescent CurrentFB=0.41V, No Switching-500-μ A
I SDShutdown CurrentV EN < 0.4V-0.11μ A
OscillatorOscillatorOscillatorOscillatorOscillatorOscillatorOscillator
F OSCOperation Frequency11.21.4MHz
DmaxMaximum Duty Cycle8690-%
Reference VoltageReference VoltageReference VoltageReference VoltageReference VoltageReference VoltageReference Voltage
V FBFeedback Voltage0.2790.310.341V
I FBFB Pin Bias Current1045100nA
MOSFETMOSFETMOSFETMOSFETMOSFETMOSFETMOSFET
Rds(on)On Resistance of MOSFET-0.951.2Ω
I OCPSwitching Current LimitNormal Operation-750-mA
Control and ProtectionControl and ProtectionControl and ProtectionControl and ProtectionControl and ProtectionControl and ProtectionControl and Protection
ENVoltage HighON1.5--V
ENVoltage LowOFF--0.4V
I ENEN Pin Pull Low Current-46μ A
OVPOVP Threshold263034V
θ JAThermal Resistance Junction-to- AmbientSOT26 (Note 2)162o C/W
θ JAThermal Resistance Junction-to- AmbientTSOT23-6 (Note 2)152o C/W
θ JAThermal Resistance Junction-to- AmbientDFN2020C-6 (Note 2)200o C/W
θ JCThermal Resistance Junction-to- CaseSOT26 (Note 2)36o C/W
θ JCThermal Resistance Junction-to- CaseTSOT23-6 (Note 2)32o C/W

Notes: 2. Test condition for SOT26, TSOT23-6 and DFN2020C-6: Device mounted on FR-4 substrate, single-layer PC board, 2oz copper, with minimum recommended pad layout

Absolute Maximum Ratings

SymbolParameterRatingUnit
V INVIN Pin Voltage-0.3~7V
VSWSW Voltage-0.3~34V
V OVPOVP Pin Voltage-0.3~35V
V FBFeedback Pin Voltage-0.3~7V
ENEN-0.3~7V
T J(MAX)Maximum Junction Temperature150o C
T LEADLead Temperature300o C
T STStorage Temperature Range-65 to +150o C

Caution: Operation above the absolute maximum ratings can cause device failure. These values, therefore, must not be exceeded under any condition. Operation at the absolute maximum rating for extended periods, may reduce device reliability.

Recommended Operating Conditions

SymbolParameterMinMaxUnit
V INInput Voltage2.75.5V
T JOperating Junction Temperature-40125o C
T AOperating Ambient Temperature-4085o C

Typical Application

Figure 1. Typical Application Circuit

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
AP5726Diodes Incorporated—
AP5726FDCG-7Diodes IncorporatedDFN2020C-6
AP5726WUG-7Diodes IncorporatedTSOT23-6
Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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