PAM2316 Datasheet, PDF (1/11 Pages) Power Analog Micoelectronics – 2.5MHz,Fast Transient 2A Step-Down Converter

PAM2316
2.5MHz,Fast Transient 2A Step-Down Converter
Features
n 2A Maximum Output Current
n Tiny 1.0uH Chip Inductor
n Excellent Transient Response
n Input Voltage: 2.7V to 5.5V
n Ultra-small, Low Profile 8-pin 2mm x 2mm
TDFN Package
n Fixed or Adjustable Output Voltage
- Adjustable Output Voltage: 1.0V to 3.3V
n High Efficiency with 2.5MHz Switching
Frequency
n 55uA No Load Quiescent Current
n 100% Duty Cycle Low-Dropout Operation
n Internal Soft Start
n Over-Temperature and Current Limit
Protection
n <1uA Shutdown Current
n -40°C to 85°C Temperature Range
n Pb-Free/Halogen Free Package
n RoHS/REACH Compliant
Applications
n Cellular Phone
n Digital Cameras
n Hard Disk Drives
n MP3 Players
n PDAs and Handheld Computers
n Portable Media Players
n USB Devices
n Wireless Network Cards
Typical Application
General Description
The PAM2316 is a 2A step-down sync converter.
The 2.5MHz switching frequency enables the use
of small external components. The ultra-small
2mm x 2mm footprint and high efficiency make the
PAM2316 an ideal choice for portable
applications.
The PAM2316 delivers 2A maximum output
current while consuming only 55uA no-load
quiescent current. Low RDS(ON) integrated
MOSFETs and 100% duty cycle operation make
the PAM2316 the ideal choice for high output
voltage, high current applications which require a
low dropout threshold.
The PAM2316 provides excellent transient
response and output accuracy across the
operating range.
The PAM2316 maintains high efficiency
throughout the load range. The PAM2316
automatically optimizes efficiency during light
load mode (PSM) and maintains constant
frequency and low output ripple during PWM
mode.
Over-temperature and short circuit protection
safeguard the PAM2316 and system components
from damage.
The PAM2316 is available in a Pb-free, ultra-
small, low profile, 8-pin 2mm x 2mm TDFN
package. The product is rated over a temperature
range of -40°C to 85°C.
Vin=3.3V
C1
10µF
C2
1.0µF
PVIN
EN
VIN
AGND
SW
SW
FB
PGND
L1
1.0uH
R1
150k
R2
150k
Vout=1.2V
C4
100pF
C3
10µF
Vout=0.6* (1+R1/R2)
Power Analog Microelectronics, Inc
www.poweranalog.com
1
12/2011 Rev1.1