AP3591
AP3591 is SINGLE PHASE SYNCHRONOUS BUCK CONTROLLER manufactured by Diodes Incorporated.
NEW PRODUCT
Description
A Product Line of Diodes Incorporated
SINGLE PHASE SYNCHRONOUS BUCK CONTROLLER
Pin Assignments
The AP3591 is a synchronous adaptive on-time buck controller providing high efficiency, excellent transient response and high DC output accuracy for low voltage regulation in notebook application.
The constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and Features small external ponent count and fast transient response.
The operation mode is selectable by EN voltage. A Diode Emulation Mode (DEM) is activated for increasing efficiency at light loads, while PWM mode is activated only for low noise operation. The AP3591 also integrates internal Soft-start, UVLO, OVP, OTP, and programmable OCP to protect the circuit. A Power Good signal is employed to monitor the output voltage.
The AP3591 is available in U-QFN3535-14 package.
(Top View)
BOOT EN/DEM
Pin 1 Mark
TON 2 VOUT 3 VDD 4
FB 5 PGOOD 6
1 14 13 UGATE 12 PHASE
EP 11 CS
10 VDDP 9 LGATE
PGND GND
U-QFN3535-14
Features
Applications
- Fixed Frequency Constant On-time Control; Resistor Programmable Frequency Adjustable from 100k Hz to 700k Hz
- Good Stability Independent of the Output Capacitor ESR
- Quick Load Step Response
- Input Voltage Range: 4.5V to 26V
- Output Voltage Range: 0.75V to 5.5V
- CCM/DEM Mode Selection
- Integrated Bootstrap Diode
- Resistor Programmable Current Limit by Low-side...
