Diodes PAM2845 - Manual (Page 4)

PAM2845
Document number: DSxxxxx Rev. 1 - 2
4 of 14
www.diodes.com
October 2012
© Diodes Incorporated
PAM2845
A Product Line of
Diodes Incorporated
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Parameter Rating Unit
Supply Voltage Range 4.8 to 28 V
Operation Temperature Range -40 to +85
°C
Junction Temperature Range -40 to +150
Thermal Information
Parameter Package Symbol Max Unit
Thermal Resistance (Junction to Case) QFN4x4-24 θ
JC
12
°C/W
Thermal Resistance (Junction to Ambient) QFN4x4-24 θ
JA
30
Electrical Characteristics
(@T
A
= +25°C, V
IN
= ENA = 12V, L = 22µH, R
SET
= 10kΩ, unless otherwise specified.)
Parameter Test Conditions Min Typ Max Units
Input Voltage Range 4.8 28 V
Quiescent Current
E NA = high (no switching frequency) 1 2
mA
F
SEL
= high (1.6M switching frequency) 10
F
SEL
= high (1M switching frequency) 6
F
SEL
= high (500k switching frequency) 3
E NA = low 5 20 µA
LDO Stage
VDD_5V 4.5 5 5.5 V
VDD_5V Current Limit 14 74 90 mA
VDD_5V UVLO Threshold 3.9 4.2 4.5 V
VDD_5V UVLO Hysteresis 40 mV
VDD_Driver 4.5 5 5.5 V
VDD_Driver Current_Limit 14 74 90 mA
VDD_Driver UVLO Threshold 3.9 4.2 4.5 V
VDD_Driver UVLO Hysteresis 70 mV
Boost Stage
Feedback Voltage 1.2 V
Switch RDS(ON) V
CC
_5V = 5V 0.2 Ω
Switch Current Limit 2.5 A
Switch Leakage Current 1 µA
Switching Frequency
F
SEL
= V
CC
_5V 1.6 MHz
F
SEL
= Open 1.0 MHz
F
SEL
= GND 500 kHz
Minimum Duty Cycle
F
SEL
= V
CC
_5V 20 %
F
SEL
= Open 10 %
F
SEL
= GND 5 %
Maximum Duty Cycle 90 %
VC Source Current 60 µA
VC Sink Current 60 µA