Diodes PAM2808BLBR Schematic [ru]
PAM2808
Document number: DS36402 Rev. 2 - 2
1 of 8
www.diodes.com
September 2015
© Diodes Incorporated
PAM2808
Description
The PAM2808 is a 5W high power HBLED driver with 1.5A constant
current. It features high efficiency and low quiescent current, making it
ideal for battery powered applications.
The PAM2808 features overcurrent protection and over temperature
shutdown. The PAM2808 is stable with a ceramic output capacitor of
4.7µF or higher.
PAM2808 is available in SO-8EP (Type B) package.
Features
High Output Current Up to 1.5A
Low Feedback Voltage: 0.1V
Stable with a Ceramic Output Capacitor
Low Quiescent Current
Open Load LED Protection
Over Temperature Shutdown
Low Temperature Coefficient
Standard SOP-8(EP) Packages
Pb-Free Package
Pin Assignments
Applications
High Bright LED Driver
White LED Torch (Flashlight)
SO-8EP (Type B)
5W HIGH POWER HBLED DRIVER
Typical Applications Circuit
PAM2808
Document number: DS36402 Rev. 2 - 2
2 of 8
www.diodes.com
September 2015
© Diodes Incorporated
PAM2808
Pin Number
Pin
Name
Function
1
NC
Not Connected
2
VIN
Input Voltage 3 EN
Enabled 4 GND
Ground
5
NC
Not Connected 6 FB
Feedback
7
VOUT
Output Voltage
8
NC
Not Connected
Parameter
Rating
Unit
Input Pin Voltage
6.5
V
EN, FB VOUT Pin Voltage
-0.3 to VIN +0.3
Maximum Output Current
PD/(VIN – VO)
—
Storage Temperature
-65 to +150
°C
Maximum Junction Temperature
+150
Lead Soldering Temperature
+300
Pin Description
Block Diagram
Absolute Maximum Ratings (@T
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.
= +25°C, unless otherwise specified.)
A
PAM2808
Document number: DS36402 Rev. 2 - 2
3 of 8
www.diodes.com
September 2015
© Diodes Incorporated
PAM2808
Parameter
Rating
Unit
Maximum Supply Voltage
6
V
Junction Temperature Range
-40 to +125
°C
Ambient Temperature Range
-40 to +85
Parameter
Symbol
Package
Max
Unit
Thermal Resistance (Junction to Case)
JC
SO-8EP (Type B)
11
°C/W
Thermal Resistance (Junction to Ambient)
JA
SO-8EP (Type B)
90
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Input Voltage Range
VIN
2.5 6.0
V
FB Reference Voltage
V
REF
0.1 V
Output Current
IO
RS = 0.3Ω
333
mA
RS = 0.14Ω
700
RS = 0.1Ω
1000
RS = 0.067Ω
1500
Over Temperature Shutdown
OTS
+150
°C
Over Temperature Hysteresis
OTH
+40
°C
EN Input High Threshold
VEH
VIN = 2.5V to 5V
1.5
V
EN Input Low Threshold
VEL
VIN = 2.5V to 5V
0.3
V
Shutdown Current
ISD
VEN = 0V
1
µA
Recommended Operating Conditions (@T
Thermal Information
Electrical Characteristics (@T
= +25°C, VIN = 4.5V, CIN = 4.7µF, C
A
= +25°C, unless otherwise specified.)
A
= 4.7µF, unless otherwise specified.)
O
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