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PAM2306 の電気的特性と機能

PAM2306のメーカーはPower Analog Micoelectronicsです、この部品の機能は「Dual High-Efficiency PWM Step-Down DC-DC Coverter」です。


製品の詳細 ( Datasheet PDF )

部品番号
PAM2306
部品説明
Dual High-Efficiency PWM Step-Down DC-DC Coverter
メーカ
Power Analog Micoelectronics
ロゴ

Power Analog Micoelectronics ロゴ 




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PAM2306 Datasheet, PAM2306 PDF,ピン配置, 機能
PAM2306
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 12L WDFN3x3 Package
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 PAM2306 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
PAM2306 provides a power-saving Pulse-
Skipping Modulation (PSM) mode to reduce
quiescent current under light load operation.
The PAM2306 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
VIN2
CIN2
4 7μF
R12
CFw1
100 pF
VOUT1
L2
PAM2306
1 VIN2
EN2 12
2 LX2
3 GND
NC2 11
FB2 10
4 FB1
GND 9
5 NC1
8
LX1
R11 6 EN1
VIN1 7
L1
COUT2
10μF
R21
VOUT2
CFW2
100 pF
CIN1
4.7 μF
VIN1
R22
COUT1
10μF
( )VOUTx
=
VREF
1+
Rx1
Rx2
Figure 1. Adjustable Voltage Regulator
Power Analog Microelectronics,Inc
www.poweranalog.com
1
07/2008 Rev 1.0

1 Page





PAM2306 pdf, ピン配列
PAM2306
Dual High-Efficiency PWM Step-Down DC-DC Coverter
Pin Configuration and Marking Information
TOP VIEW
WDFN-12L 3x3
VIN2 1
LX2 2
GND 3
FB1 4
NC1 5
EN1 6
2306v1v2
XXXYW
12 EN2
11 NC2
10 FB2
9 GND
8 LX1
7 VIN1
GND
(Exposed Pad)
v1: Output Voltage 1
v2: Output Voltage 2
(refer to “Ordering
Information”)
X: Internal Code
Y: Year
W: Week
Pin No.
1
2
3,9,
Exposed Pad
4
5,11
6
7
8
10
www.DataShee1t42U.com
Pin Name
VIN2
LX2
GND
FB1
NC1,NC2
EN1
VIN1
LX1
FB2
EN2
Pin Function
Power Input of Channel 2.
Pin for Switching of Channel 2.
Ground.The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
Feedback of Channel 1.
No Connection
Chip Enable of Channel 1 (Active High).VEN1VIN1.
Power Input of Channel 1.
Pin for Switching of Channel 1.
Feedback of Channel 2.
Chip Enable of Channel 2 (Active High). VEN2VIN2.
Power Analog Microelectronics,Inc
www.poweranalog.com
3
07/2008 Rev 1.0


3Pages


PAM2306 電子部品, 半導体
PAM2306
Dual High-Efficiency PWM Step-Down DC-DC Coverter
Typical Performance Characteristics
TA=25°C, C =IN 10μF, CO=10μF, L=4.7μH, unless otherwise noted.
Efficiency vs Output Current (Vo=1.2V)
100
90
80
70
60
50
40
30
20 Vin=3.6V
10 Vin=4.2V
Vi n= 5V
0
1 10 100 1000
Output Current(mA)
Efficiency vs Output Current (Vo=1.5V)
100
90
80
70
60
50
40
30
20
1
2.5V
3.6V
4.2V
10 100 1000
Output Current(mA)
Efficiency vs Output Current (Vo=1.8V)
100
90
80
70
60
50
40
30
20
www.DataS1heet4U.com
10 100
Output Current(mA)
2.5V
3.6V
4.2V
1000
Efficiency vs Output Current (Vo=2.5V)
100
90
80
70
60
50
40
30
20
1
3V
3.6V
4.2V
10 100 1000
Output Current(mA)
100 Efficiency vs Output Current (Vo=2.8V)
90
80
70
60
50
40
30
20
1
3V
3.6V
4.2V
10 100 1000
Output Current(mA)
Eifficiency VS Output Current (Vo=3.3V)
100
90
80
70
60
50
40
30
20 Vin=3.6V
Vin=4.2V
10 Vin=5V
0
1 10 100 1000
Output Current(mA)
Power Analog Microelectronics,Inc
www.poweranalog.com
6
07/2008 Rev 1.0

6 Page

合計 : 15 ページ
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