Diodes PAM2327 - Manual (Page 3)

PAM2327
Document number: DS36277 Rev. 2 - 2
3 of 11
www.diodes.com
July 2013
© Diodes Incorporated
PAM2327
A Product Line of
Diodes Incorporated
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Parameter Rating Unit
Supply Voltage 2.5 to 5.5 V
Operation Temperature Range -40 to +85
°C
Junction Temperature Range -40 to +125
Thermal Information
Parameter Symbol Package Max Unit
Thermal Resistance (Junction to Case) θ
JC
QFN2x2-12 16
°C/W
Thermal Resistance (Junction to Ambient) θ
JA
QFN2x2-12 80
Electrical Characteristics
(@T A = +25°C, V IN = 3.3V, V OUT = 1.2V, C IN = 20µF, C O = 20µF, L = 1µH, unless otherwise specified.)
Parameter Symbol Test Conditions Min Typ Max Units
Input Voltage Range V IN
2.5 3.3 5.5 V
UVLO Threshold V
UVLO
V
IN
Rising 2.35 2.5 2.65 V
Hysteresis 400 550 mV
Output Voltage Accuracy V
OUT
-4.0 +4.0 %
Regulated Feedback Voltage V
FB
No Load 0.591 0.60 0.609 V
PMOS Current Limit I
LIM
4.8 A
Output Voltage Line Regulation LNR V
IN
= 3.3V to 5.5V 0.5 1 %/V
Output Voltage Load Regulation LDR I
O
= 1mA to 2A 2 %
Quiescent Current I
Q
No Load 55 100 µA
Shutdown Current I SD V EN = 0V 1 µA
Oscillator Frequency f
OSC
1.0 1.2 1.6 MHz
Drain-Source On-State Resisitance R
DS(ON)
I
DS
= 100mA
P MOSFET 40 70 m Ω
N MOSFET 30 50 m Ω
SW Leakage Current I
LSW
1 µA
Start-Up Time t
S
250 1000 µs
PSM Threshold I TH V IN = 3.3V, V O = 1.2V 250 mA
EN Threshold High V
EH
1.2 V
EN Threshold Low V
EL
0.4 V
EN Input Current I
EN
V
EN
= 2V 1.2 4 µA
Over Temperature Protection OTP 150 °C
OTP Hysteresis OTH 30 °C
Effciency η
I
O
= 10mA 75 81
I
O
= 500mA to 1A 85 90
% I
O
= 1.5A 85 90
I
O
= 2A 80 89
Output Ripple Ripple
I
O
= 10mA -5 +5
%
I O
≥ 300mA -2 +2
Output Transient Ripple V
PK-PK
I
O
= 20mA to 1A -10 +10
%
I
O
= 20mA to 2A -12 +12
PG Pin Trigger Delay 90 µs
PG Pin Threshold (relative to V
OUT
) ±10 %
PG Open Drain Impedance
(PG = PV
IN
)
250K 500K Ω
PG Open Drain Impedance
(PG = Low)
100 Ω