PAM2303 Datasheet, PDF (3/13 Pages) Power Analog Micoelectronics – 3A Low Noise Step-Down DC-DC Converter

PAM2303
3A Low Noise Step-Down DC-DC Converter
Pin Configuration & Marking Information
Top View
DFN3X3-10
SW 1
SW 2
SW 3
GND 4
EN 5
P2303C
XXXYW
10 VIN
9 VIN
8 VIN
7 NC
6 FB
C: Pin Configuration
Y: Year
W: Week
X: Internal Code
GND
(Exposed Pad)
Pin Description
Name
SW
GND
EN
FB
NC
VIN
DFN 3X3 -1 0
Function
1,2,3 The drains of the internal main and synchronous power MOSFET.
4
GND
Enable control input. Force this pin voltage above 1.5V, enables the chip, and
5
below 0.3V shuts down the device.
6
Feedback voltage to internal error amplifier, the threshold voltage is 0.6V.
7
No connec ted
8,9,10 Bias supply. Chip main power supply pin
Absolute Maximum Ratings
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.
Input Voltage PV ,_IN V ._IN .....................................6V
SW Pin Voltage......................-0.3V to (PV + _IN 0.3V)
FB Pin Voltage.........................-0.3V to (V + _IN 0.3V)
EN Pin Voltage...................................-0.3V to -6V
Maximum Junction Temperature..................150°C
Storage Temperature Range...........-65°C to 150°C
Soldering Temperature.......................300°C, 5sec
Recommended Operating Conditions
Supply Voltage..................................2.7V to 5.5V Junction Temperature Range..........-40°C to 125°C
Ambient Temperature Range...........-40°C to 85°C
Thermal Information
Parameter
Symbo l
Thermal Resistanc e (Junction to Ambient)
θ_JA
Thermal Resistance (Junction to Case)
θ_JC
Package
SOP-8(EP)
DF N3 X3-1 0
QFN 3X3- 16
SOP-8(EP)
DF N3 X3-1 0
QFN 3X3- 16
Maximum
90
60
35
11
8.5
11
U nit
°C/W
°C/W
Power Analog Microelectronics, Inc
www.poweranalog.com
3
11/2011 Rev1.2