PAM2842 Datasheet, PDF (5/17 Pages) Power Analog Micoelectronics – High Power LED Driver

A Product Line of
Diodes Incorporated
PAM2842
Electrical Characteristics (cont.) (@T_A = +25°C, V_EN = V_DD = 24V, 1W x 10 LEDs, unless otherwise specified.)
Parameter
Test Conditions
LDO Stage
VDD_5V
No Switching
VDD_5V Current Limit
No Switching
VDD_5V UVLO Threshold
No Switching
VDD_5V UVLO Hysteresis
No Switching
VDD_DR
No Switching
VDD_DR Current_Limit
No Switching
VDD_DR UVLO Threshold
No Switching
Switch Stage
Switch RDS(ON)
VDD_5V = 5V
Switch Current Limit
Switch Leakage Current
RT Voltage
R_RT = 71kΩ
R_RT = 30kΩ
Switching Frequency (Note 2)
R_RT = 71kΩ
R_RT = 180kΩ
F_SW = 1MHz
Min Duty Cycle
F_SW = 500kHz
Max Duty Cycle
F_SW = 200kHz
Low Side Sense
High Side Sense
VC Source Current
Feedback Voltage = 0
VC Sink Current
Feedback Voltage = 0
Fault Protection
OV Threshold Voltage
OV Hysteresis
Thermal Shutdown
Thermal Shutdown Hysteresis
Control Interface
EN High
EN Low
Note:
2. Switching frequency
FSW
=
10¹²
24x(R_RT + 12k)
, reference value.
Min
Typ
Max
4.5
5
5.5
14
74
90
3.7
4.0
4.3
200
4.5
5
5.5
14
50
90
3.7
4.0
4.3
0.1
3.5
50
1.1
1.2
1.3
800k
1M
1.2M
400
500
600
160
200
240
10
5
2.5
95
100
30
30
1.1
1.2
1.3
70
150
30
1.5
0.4
Units
V
mA
V
mV
V
mA
V
Ω
A
µA
V
Hz
kHz
kHz
%
%
%
%
%
µA
µA
V
mV
°C
°C
V
V
PAM2842
Document number: DSxxxxx Rev. 1 - 2
5 of 17
www.diodes.com
October 2012
© Diodes Incorporated