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PAM2861 데이터시트 PDF




Power Analog Micoelectronics에서 제조한 전자 부품 PAM2861은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 PAM2861 자료 제공

부품번호 PAM2861 기능
기능 1A LED DRIVER
제조업체 Power Analog Micoelectronics
로고 Power Analog Micoelectronics 로고


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PAM2861 데이터시트, 핀배열, 회로
PAM2861
1A LED Driver with Internal Switch
Features
Description
n Simple low parts count
The PAM2861 is a continuous mode inductive
n Internal 40V NDMOS switch
step-down converter, designed for driving single
n 1A output current
or multiple series connected LEDs efficiently
n Single pin on/off and brightness control
from a voltage source higher than the LED
Using DC voltage or PWM
voltage. The device operates from an input
n Soft-start
supply between 6V and 40V and provides an
n High efficiency (up to 95%)
externally adjustable output current of up to 1A.
n Wide input voltage range: 6V to 40V
Depending upon supply voltage and external
n Output shutdown
components, this can provide up to 30 watts of
n Up to 1MHz switching frequency
output power.
n Inherent open-circuit LED protection
n Typical 5% output current accuracy
n Pb-free SOT23-5, SOT89-5 and PSOP-8
Packages
E TApplications
H En Low voltage halogen replacement LEDs
Sn Low voltage industrial lighting
An LED back-up lighting
A RY D ATn Illuminated signs
The PAM2861 includes the output switch and a
high-side output current sensing circuit, which
uses an external resistor to set the nominal
average output current.
Output current can be adjusted below the set
value, by applying an external control signal to
the VSET pin.
The VSET pin will accept either a DC voltage or a
PWM waveform.
The soft-start time can be increased using an
external capacitor from the VSET pin to ground.
Applying a voltage of 0.2V or lower to the VSET
pin turns the output off and switches the device
into a low current standby state.
PRELIMINTypical Application
D1
Rs
0.3Ω
VIN(6V-40V)
VIN
ISENSE
PAM2861
L1
100μH
C1
10μF
VSET
Floating
GND
LX
Power Analog Microelectronics,Inc
www.poweranalog.com
1
03/2010




PAM2861 pdf, 반도체, 판매, 대치품
PAM2861
1A LED Driver with Internal Switch
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 Range..........................-0.3V to 40V
LX, ISENSE Pin voltage.....................-0.3V to 40V
VSET Pin voltage.................................-0.3V to 6
Maximum Junction Temperature..................170°C
Storage Temperature.....................-65°C to 170°C
Soldering Temperature.......................300°C, 5sec
Recommended Operating Conditions
Input Voltage Range.............................6V to 40V Ambient Temperature Range............-40°C to 85°C
TThermal Information
E EParameter
S HThermal Resistance
A(Junction to Ambient)
D ATThermal Resistance
PRELIMINARY(Junction to Case)
Junction Temperature Range.........-40°C to 150°C
Package
SOT23-5
SOT89-5
PSOP-8
SOT23-5
SOT89-5
PSOP-8
Symbol
θjA
θjC
Maximum
250
160
90
130
45
11
Unit
°C/W
Power Analog Microelectronics,Inc
www.poweranalog.com
4
03/2010

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PAM2861 전자부품, 판매, 대치품
PAM2861
1A LED Driver with Internal Switch
Typical Operating Characteristics
TA=25°C,V =IN 16V, unless otherwise noted.
5. Operating Frequency vs Input Voltage
(Rs=0.1Ω, L=47μH)
800
700
600
1LED
3LED
5LED
2LED
4LED
6. Operating Frequency vs Input Voltage
(Rs=0.3Ω, L=47μH)
800
700
600
500 500
400 400
300
200
T100
E0
HE5
10 15 20 25 30 35
Input Voltage (V)
TA S7. Operating Frequency vs Input Voltage
A(Rs=0.1Ω, L=33μH)
D800
Y700
R600
1LED
3LED
5LED
2LED
4LED
A500
I N400
I M300
200
E L100
R0
P5 10 15 20 25 30 35
300
200
100
0
5
1LED
2LED
3LED
4LED
5LED
6LED
10 15 20 25 30 35
Input Voltage (V)
8. Operating Frequency vs Input Voltage
(Rs=0.3Ω, L=100μH)
800
700
600
500
1LED
2LED
3LED
4LED
5LED
6LED
400
300
200
100
0
5 10 15 20 25 30 35
Input Voltage (V)
Input Voltage (V)
Power Analog Microelectronics,Inc
www.poweranalog.com
7
03/2010

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관련 데이터시트

부품번호상세설명 및 기능제조사
PAM2861

1A LED DRIVER

Diodes
Diodes
PAM2861

1A LED DRIVER

Power Analog Micoelectronics
Power Analog Micoelectronics

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