AME5242 Datasheet, PDF (1/15 Pages) Analog Microelectronics – 40V CC/CV Buck Converter

AME
AME5242
n General Description
The AME5242 is a specific 40V HV buck converter that
operates in either CV/CC mode supports an output volt-
age range of 0.8V to 12V and support constant output
current at 200KHz switching frequency. AME5242 inte-
grated auto detection USB devices plugged in, providing
the correct hand-shaking protocol with compliant client
devices. This product is specifically designed for car
charger or wall adapter application.
The AME5242 supports the following charging logic
schemes:
l USB 2.0 BC1.2
l Chinese Telecom Standard YD/T 1591-2009
l Divider Mode, compliant with Apple devices
Protection features include under voltage protection,
over voltage protection, current limit, thermal shutdown,
and short circuit protection. The device is available in
SOP-8/PP package with exposed pad for low thermal
resistance.
n Features
l 40V Maximum Rating for Input Power
l Support Fast Charge of Most Apple Devices
and BC1.2 and YD/T 1591-2009 Complaint
Devices
l Auto Detection of USB Devices Plugged in
l 200KHz Switching Frequency
l CC/CV Mode Function
l Internal Soft Start
l UVP, Input/Output OVP, OTP, SCP
l Available in SOP-8/PP Package
l RoHS Compliant and Halogen Free
40V CC/CV Buck Converter
n Application
l Car Charger
l Wall Adapter
n Typical Application
R4
10Ω
C3
22nF
VIN=
8V~40V
C1
47uF
C4
3.3nF
C5
Optional
R3
8.2K
BS
IN
SW
AME5242
COMP
FB
D+
D-
GND
L1
47uH
D1 ^R1
SK110K
34
R2
20K
C2
470uF
VBUS
D-
D+
GND
AME5242-AZAADJ-24
n Functional Block Diagram
IN
Oscillator
EMI
Control
BS
D+
Auto
Detect
D-
PWM
Controller
0.8V
SW
CC
FB
Control
Rev. A.02
COMP
GND
1