PAM2804 Datasheet, PDF (4/11 Pages) Power Analog Micoelectronics – 1A Step-Down Constant Current, High Efficiency LED Driver

PAM2804
1A Step-Down Constant Current, High Efficiency LED Driver
Electrical Characteristic
T_A =25°C , V_IN =4.2V, Real WLED load, C_IN =10µF, C_O =10µF, L=4.7µH, unless otherwise noted.
PAR AMETER
Input Voltage Range
Regulated Feedback Voltage
Peak Induc tor Current
Quiescent Current
Shutdown Current
Oscillator Frequency
Drain-Source On-State Resis tance
SW Leakage Current
High Effic iency
EN Threshold High
EN Threshold Low
EN Leakage Current
Over Temperature Protection
OTP Hysteresis
SYM B OL
V_IN
VFB
IPK
I_Q
ISD
f_OSC
RDS (ON)
I_LSW
η
VEH
V_EL
IEN
OTP
OTH
Test Conditions
VIN=5V
No load
VEN = 0V
V_O = 100%
IDS =10 0m A
P MOSFET
N MOSFET
MIN
2.5
0.095
1.2
1.5
TYP
0.1
1.5
180
1.5
0.3
0.35
±0.01
93
±0.01
150
30
M AX
6.0
0.105
1
1.8
0.45
0.5
1
0.3
UNITS
V
V
A
µA
µA
MHz
Ω
Ω
µA
%
V
V
µA
°C
°C
Power Analog Microelectronics, Inc
www.poweranalog.com
4
10/2010 Rev1.0