Diodes PAM2842 - Manual (Page 4)

PAM2842
Document number: DSxxxxx Rev. 1 - 2
4 of 17
www.diodes.com
October 2012
© Diodes Incorporated
PAM2842
A Product Line of
Diodes Incorporated
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
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.
Parameter Rating Unit
Supply Voltage 40 V
Buck Application Maximum Output Current 3 A
I/O Pin Voltage Range GND -0.3 to V
DD
+0.3 V
Maximum Junction Temperature 150
°C Storage Temperature -40 to +150
Soldering Temperature 300, 5sec
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Parameter Rating Unit
Supply Voltage Range 5.5 to 40 V
Operation Temperature Range -40 to +85
°C
Junction Temperature Range -40 to +125
Thermal Information
Parameter Package Symbol Max Unit
Thermal Resistance (Junction to Case)
TSSOP-20
θ
JC
20
°C/W
QFN6x6-40 7.6 (Note 1)
Thermal Resistance (Junction to Ambient)
TSSOP-20
θ
JA
90
QFN6x6-40 18.1 (Note 1)
Note: 1. The exposed PAD must be soldered to a thermal land on the PCB.
Electrical Characteristics
(@T
A
= +25°C, V
EN
= V
DD
= 24V, 1W x 10 LEDs, unless otherwise specified.)
Parameter Test Conditions Min Typ Max Units
Input Voltage Range 5.5 40 V
Quiescent Current
E NA = high (no switching frequency) 1 2 mA
E NA = high (1M switching frequency) 6 mA
E NA = high (500k switching frequency) 3 mA
E NA = high (200k switching frequency) 1.6 mA
E NA = low 5 10 µA
Feedback Voltage, Low Side V
FB
= V
SENSE+
-AGND, V
SENSE-
= AGND 95 100 105 mV
Feedback Voltage, High Side V
FB
= V
SENSE+
– V
SENSE-
95 100 105 mV
LED Current Line Regulation I
O
= 350mA 0.02 %/V
LED Current Load Regulation 1.0 %
VDD_DR UVLO Hysteresis No Switching 200 mV