PAM2308 Datasheet PDF - Power Analog Micoelectronics
| Part Number | PAM2308 | |
| Description | Dual High-Efficiency PWM Step-Down DC-DC Coverter | |
| Manufacturers | Power Analog Micoelectronics | |
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There is a preview and PAM2308 download ( pdf file ) link at the bottom of this page. Total 15 Pages | ||
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PAM2308
Dual High-Efficiency PWM Step-Down DC-DC Coverter
Features
n Efficiency up to 96%
n Only 40μA(Typ. per Channel) Quiescent
Current
n Output Current: Up to 1A per Channel
n Internal Synchronous Rectifier
n 1.5MHz Switching Frequency
n Soft Start
n Under-Voltage Lockout
n Short Circuit Protection
n Thermal Shutdown
n Small 10L WDFN 3x3
Packages
n Pb-Free Package and RoHS Compliant
Applications
n Cellular Phone
n Portable Electronics
n Personal Information Appliances
n Wireless and DSL Modems
n MP3 Players
General Description
The PAM2308 is a dual step-down current-mode,
DC-DC converter. At heavy load, the constant-
frequency PWM control performs excellent
stability and transient response. To ensure the
longest battery life in portable applications, the
PAM2308 provides a power-saving Pulse-
Skipping Modulation (PSM) mode to reduce
quiescent current under light load operation.
The PAM2308 supports a range of input voltages
from 2.5V to 5.5V, allowing the use of a single
Li+/Li-polymer cell, multiple Alkaline/NiMH cell,
USB, and other standard power sources. The dual
output voltages are available for 3.3V, 2.8V, 2.5V,
1.8V, 1.5V, 1.2V or adjustable. All versions
employ internal power switch and synchronous
rectifier for to minimize external part count and
realize high efficiency. During shutdown, the input
is disconnected from the output and the shutdown
current is less than 0.1μA. Other key features
include under-voltage lockout to prevent deep
battery discharge.
Typical Application
www.DataSheet4U.com
VOUT1
COUT1
10μF
R12
VIN2
CIN2
4.7μF
C Fw1
100nF
L1
R11 PAM2308
1
EN1
10
LX1
2
FB1
VIN1 8
4
GND
GND 9
3
VIN2
5 LX2
FB2 7
EN2 6
CIN1
4 .7 μF
VIN1
R21
R22
CFW2
100pF
L2
VOUT2
COUT2
10μF
( )VOUTx
=
VREF
1+
Rx1
Rx2
Figure 1. Adjustable Voltage Regulator
Power Analog Microelectronics,Inc
www.poweranalog.com
1
07/2008 Rev 1.0
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PAM2308
Dual High-Efficiency PWM Step-Down DC-DC Coverter
Electrical Characteristic
TA=25 OC, VIN=3.6V, VO=1.8V, CIN=10μF, CO=10μF, L=2.2μH, unless otherwise noted.
PARAMETER
Input Voltage Range
Regulated Feedback Voltage
Reference Voltage Line Regulation
Regulated Output Voltage Accuary
Peak Inductor Current
Output Voltage Line Regulation
Output Voltage Load Regulation
Quiescent Current (per channel)
Shutdown Current (per channel)
Oscillator Frequency
Drain-Source On-State Resistance
SW Leakage Current (per channel)
High Efficiency
EN Threshold High
EN Threshold Low
EN Leakage Current
Over Temperature Protection
SYMBOL
VIN
VFB
ΔVFB
VO
IPK
LNR
LDR
IQ
ISD
fOSC
RDS(ON)
ILSW
η
VEH
VEL
IEN
OTP
Test Conditions
IO = 100mA
VIN=3V,VFB = 0.5V or
VO=90%
VIN = 2.5V to 5V, IO=10mA
IO=1mA to 1A
No load
VEN = 0V
VO = 100%
VFB = 0V or VO = 0V
P MOSFET
IDS=100mA
N MOSFET
MIN TYP MAX
2.5 5.5
0.588 0.6 0.612
0.3
-3 +3
1.5
0.2 0.5
0.5 1.5
40 70
0.1 1
1.2 1.5 1.8
500
0.3 0.45
0.35 0.5
±0.01 1
96
1.5
0.3
±0.01
150
OTP Hysteresis
www.DataSheet4U.com
OTH
30
UNITS
V
V
%/V
%
A
%/V
%
μA
μA
MHz
kHz
Ω
Ω
μA
%
V
V
μA
°C
°C
Power Analog Microelectronics,Inc
www.poweranalog.com
5
07/2008 Rev 1.0
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PAM2308 electronic component. |
| Information | Total 15 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ PAM2308.PDF Datasheet ] | |
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