PAM2841 Datasheet, PDF (4/14 Pages) Power Analog Micoelectronics – 1.5ASW Current, 40V Precision WLED Driver

PAM2841
1.5A SW Current, 40V Precision WLED Driver
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.
Supply Voltage.............................................6.0V
Output Current............................................50mA
I/O Pin Voltage Range.........GND-0.3V to V + _DD 0.3V
Maximum SW Pin Voltage...............................40V
Storage Temperature.....................-40^OC to 150^OC
Maximum Junction Temperature..................150^OC
Soldering Temperature.......................300^OC,5sec
Recommended Operating Conditions
Supply Voltage Range........................2.8V to 5.5V Junction Temperature Range.............0^OC to 125^OC
Operation Temperature Range..........-40^OC to 85^OC
Thermal Information
Parameter
Thermal Resistance
(Junction to Ambient)
Thermal Resistance
(Junction to Case)
Symbol
θ_JA
θ_JC
Package
MSOP
DFN
MSOP
DFN
Maximum
180
102
40
20
Unit
°C/W
°C/W
°C/W
°C/W
Electrical Characteristic
V_EN=V = _DD 5.0V, 10 LEDs, T_A=25^OC, unless otherwise noted.
Parameters
Symbol Test Conditions
Supply Voltage Range
V_DD
Quiescent Current
I_Q
No Switching
Shutdown Current
ISD
V_ENA=low
R3=5.1Ω
Output Current
R3=6.8Ω
IＯ
R3=10Ω
R3=20Ω
Output Voltage Range
V_O
Feedback Voltage
V_FB V_ENA=high
SW On Resistance
R_DS(ON) I_SW=100mA
SW Current Limit
I_LIM Switch On
SW Frequency
f_SW
Maximum Duty Cycle
DC
Over Voltage Protection Threshold OVP Open Load
Enable Threshold Voltage
V_EL Chip Shutdown
V_EH Chip On
Under Voltage Lockout
UVLO V_IN falling
UVLO Hysterisis
V_TH
Over Temperature Shutdown
OTS
Over Temperature Hysterisis
OTH
MIN.
2.7
TYP.
200
40
30
20
10
V_INx1.1
194
200
0.35
1.5
0.7
1.0
95
1.2
1.2
2.0
2.2
0.2
150
30
MAX.
5.5
300
1
UNITS
V
μA
μA
mA
40
V
206
mV
0.5
Ω
A
1.3
MHz
%
V
0.4
V
2.4
V
V
°C
°C
Power Analog Microelectronics,Inc
www.poweranalog.com
4
08/2008 Rev 1.3