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PAM2301 の電気的特性と機能

PAM2301のメーカーはPower Analog Micoelectronicsです、この部品の機能は「800mA Step-Down DC-DC Converters」です。


製品の詳細 ( Datasheet PDF )

部品番号
PAM2301
部品説明
800mA Step-Down DC-DC Converters
メーカ
Power Analog Micoelectronics
ロゴ

Power Analog Micoelectronics ロゴ 




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PAM2301 Datasheet, PAM2301 PDF,ピン配置, 機能
Features
n Efficiency up to 96%
n Only 40μA(TYP.) Quiescent Current
n Output Current: Up to 800mA
n Internal Synchronous Rectifier
n 1.5MHz Switching Frequency
n Soft Start
n Under-Voltage Lockout
n Short Circuit Protection
n Thermal Shutdown
n 5-pin Small SOT23-5 Package
n Pb-Free Package
Applications
n Cellular Phone
n Portable Electronics
n Wireless Devices
n Cordless Phone
n Computer Peripherals
n Battery Powered Widgets
n Electronic Scales
n Digital Frame
Typical Application
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Fixed Output Voltage
VIN
CIN
10μF
4 VIN
3 4.7μH
SW
1 EN
5
VOUT
GND
2
Vo
Co
10μF
PAM2301
800mA Step-Down DC-DC Converters
General Description
The PAM2301 is a 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
PAM2301 provides a power-saving Pulse-
Skipping Modulation (PSM) mode to reduce
quiescent current under light load operation to
save power.
The PAM2301 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
output voltage is adjustable from 0.6V to the input
voltage, while the part number suffix PAM2301-
XX indicates pre-set output voltage of 3.3V, 2.8V,
2.5V, 1.8V, 1.5V, 1.2V or adjustable. All versions
employ internal power switch and synchronous
rectifierfor 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.
The PAM2301 is available in SOT23-5 package.
Adjustable Output Voltage
VIN
CIN
10μF
4 VIN
3 4.7μH
SW
1 EN
5
FB
GND
2
R1
R2
Vo
20pF Co
10μF
VO
=
0.6 ´
æçè1 +
R1
R2
ö
÷ø
Power Analog Microelectronics,Inc
www.poweranalog.com
1
09/2008 Rev 1.3

1 Page





PAM2301 pdf, ピン配列
PAM2301
800mA Step-Down DC-DC Converters
Absolute Maximum Ratings
These are stress ratings only and functional operation is not implied. Exposure to absolute
maximum ratings for prolonged time periods may affect device reliability. All voltages are with
respect to ground.
Input Voltage..................................-0.3V to 6.6V
EN, FB Pin Voltage.............................-0.3V to VIN
SW Pi n Voltage.....................-0.3V to ( V +IN 0.3V)
Junction Temperature................................125OC
Storage Temperature Range........-65OC to 150OC
Soldering Temperature......................300OC, 5sec
Recommended Operating Conditions
Supply Voltage................................2.5V to 5.5V
Max. Supply Voltage (for Max. duration of
30 minutes)................................................6.0V
Ambient Temperature Range..........-40OC to 85OC
Thermal Information
Parameter
Thermal Resistance
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Internal Power Dissipation
Package
SOT23-5
SOT23-5
SOT23-5
Symbol
θJC
θJA
PD
Maximum
130
250
400
Unit
°C/W
mW
www.DataSheet4U.com
Power Analog Microelectronics,Inc
www.poweranalog.com
3
09/2008 Rev 1.3


3Pages


PAM2301 電子部品, 半導体
PAM2301
800mA Step-Down DC-DC Converters
Typical Performance Characteristics
TA=25 OC, CIN=10μF, CO=10uF,L=4.7μH, unless otherwise noted.
Efficiency VS Input Voltage (Vo=1.2V)
100
90
80
70
60
50
40
30
20 Io=10mA
10 Io=100mA
Io=800mA
0
2.5 3.5 4.5 5.5
Input Voltage(V)
Efficiency VS Input Voltage (Vo=1.8V)
100
90
80
70
60
50
10mA
40 100mA
800mA
30
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3.5 4
Input Voltage(V)
4.5
5
Efficiency VS Input Voltage (Vo=1.5V)
100
90
80
70
60
50
40
30
2.5
10mA
100mA
800mA
3 3.5 4
Input Voltage(V)
4.5
5
Efficiency VS Input Voltage (Vo=2.5V)
100
90
80
70
60
50
40
30
3
10mA
100mA
800mA
3.5 4 4.5
Input Voltage(V)
5
5.5
Efficiency VS Input Voltage (Vo=2.8V)
100
90
80
70
60
50
40
30
3
10mA
100mA
800mA
3.5 4 4.5
Input Voltage(V)
5
5.5
Eifficiency VS Input Voltage (Vo=3.3V)
100
90
80
70
60
50
40
30
20 Io=10mA
10 Io=100mA
I o= 800mA
0
3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5
Input Voltage(V)
Power Analog Microelectronics,Inc
www.poweranalog.com
6
09/2008 Rev 1.3

6 Page

合計 : 13 ページ
PDF ダウンロード

[ PAM2301 データシート.PDF ]

データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。

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部品番号部品説明メーカ
PAM2301

800mA Step-Down DC-DC Converters

Power Analog Micoelectronics
Power Analog Micoelectronics
PAM2301

800mA STEP-DOWN DC-DC CONVERTER

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PAM2303

3A STEP-DOWN DC-DC CONVERTER

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PAM2304

1A STEP-DOWN DC-DC CONVERTER

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