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AP5726

White LED Step-Up DC/DC Converter

The AP5726 is a white led step-up dc/dc converter from Diodes Incorporated. View the full AP5726 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

AP5726 shares its datasheet with AP5726WG-7, whose page lists every part number it covers.

Official AP5726 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Diodes Incorporated

Category

Boost Converters

AP5726 Key Specifications

ParameterValue
Efficiency84% typical
OVP Threshold30V typical (26V to 34V)
UVLO Threshold2.2V typical (2.4V max)
Feedback Voltage0.31V (0.279V to 0.341V)
Shutdown Current0.1μA typical (1μA max)
Quiescent Current500μA typical
Maximum Duty Cycle90% typical
Input Voltage Range2.7V to 5.5V
Switching Frequency1.2MHz (1MHz to 1.4MHz)
Switch Current Limit750mA typical
Switch On-Resistance0.95Ω typical (1.2Ω max)
Number Of LEDs Supported2 to 6 in series
SW Pin Voltage (Abs Max)-0.3V to 34V
Operating Ambient Temperature-40°C to 85°C
Operating Junction Temperature-40°C to 125°C

AP5726 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

AP5726 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 .

AP5726 Applications

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

AP5726 Pin Configuration

AP5726 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

AP5726 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.

AP5726 Recommended Operating Conditions

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

AP5726 Typical Application

Figure 1. Typical Application Circuit

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
AP5726FDCG-7Diodes IncorporatedDFN2020C-6
AP5726WG-7Diodes IncorporatedSOT26
AP5726WUG-7Diodes IncorporatedTSOT23-6

Other Boost Converters

  • AP5726FDCG-7 – Diodes Incorporated, White LED Step-Up DC/DC Converter
  • AP5726WG-7 – Diodes Incorporated, White LED Step-Up DC/DC Converter
  • AP5726WUG-7 – Diodes Incorporated, White LED Step-Up DC/DC Converter
  • BQ24195 – Texas Instruments, Battery Charger with Boost Converter
  • BQ24195/L – Texas Instruments, Battery Charger with Boost Converter
  • BQ24195LRGER – Texas Instruments, Battery Charger with Boost Converter
  • BQ24195LRGET – Texas Instruments, Battery Charger with Boost Converter
  • BQ24195LRGET.A – Texas Instruments, Battery Charger with Boost Converter

All Boost Converters datasheetsAll Diodes datasheets (217)

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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