PAM2310
2A LOW NOISE STEP-DOWN DC-DC CONVERTER
Description
The PAM2310 is a 2A step-down DC-DC converter. At heavy load,
the constant-frequency PWM control performs excellent stability and
transient response. No external compensation components are
required
The PAM2310 supports a range of input voltages from 2.7V to 5.5V,
allowing the use of a single Li+/Li -polymer cell, multiple Alkaline/
NiMH cell,and other standard power sources. The output voltage is
adjustable from 0.6V to the input voltage. The PAM2310 employs
internal power switch and synchronous rectifier to minimize external
part count and realize high efficiency. During shutdown, the input is
disconnected from the output and the shutdown current is less than
1µA. Other key features include over-temperature and short circuit
protection, and under-voltage lockout to prevent deep battery
discharge.
The PAM2310 delivers 2A maximum output current while consuming
only 42µA of no-load quiescent current. Ultra-low R
DS(ON)
integrated
MOSFETs and 100% duty cycle operation make the PAM2310 an
ideal choice for high output voltage, high current applications which
require a low dropout threshold.
The PAM2310 is available in SO-8EP package.
Pin Assignments
Top View
NEW PRODUCT
SO-8EP
Applications
Features
Output Current: Up to 2A
Output Voltage: 0.6V to VIN
Input Voltage: 2.7V to 5.5V
Peak Efficiency up to 95%
42µA (typ.) No Load Quiescent Current
Shutdown Current: <1µA
100% Duty Cycle Operation
1.5MHz Switching Frequency
Internal Soft Start
No External Compensation Required
Current Limit Protection
Thermal Shutdown
SO-8EP Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
5V or 3.3V Point of Load Conversion
Telecom/Networking Equipment
Set Top Boxes
Storage Equipment
Video Cards
DDR Power Supply
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
PAM2310
Document number: DS36397 Rev. 2 - 2
1 of 11
www.diodes.com
February 2018
© Diodes Incorporated
PAM2310
Typical Applications Circuit
V
O
V
IN
C
IN
22F
C
O
22F
NEW PRODUCT
R1
V
O
½
0.6x
1
R2
Pin Descriptions
Pin Name
NC
VIN
SW
GND
FB
NC
EN
NC
Package Name
1
2
3
4
5
6
7
8
No Connected
Bias supply. Chip main power supply pin
The drains of the internal main and synchronous power MOSFET.
GND
Feedback voltage to internal error amplifier, the threshold voltage is 0.6V.
No Connected
Enable control input. Force this pin voltage above 1.5V, enables the chip,
and below 0.3V shuts down the device.
No Connected
Function
Functional Block Diagram
PAM2310
Document number: DS36397 Rev. 2 - 2
2 of 11
www.diodes.com
February 2018
© Diodes Incorporated
PAM2310
Absolute Maximum Ratings
(@T
A
= +25° unless otherwise specified.)
C,
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
Input Voltage V
IN
SW Pin Voltage
FB Pin Voltage
EN Pin Voltage
Maximum Junction Temperature
Storage Temperature Range
Soldering Temperature
Rating
6
-0.3 to (V
IN
+0.3)
-0.3 to (V
IN
+0.3)
-0.3 to 6.0
+150
-65 to +150
+300, 5s
Unit
V
V
V
V
°
C
°
C
°
C
NEW PRODUCT
Recommended Operating Conditions
(@T
A
= +25° unless otherwise specified.)
C,
Parameter
Supply Voltage
Junction Temperature Range
Ambient Temperature Range
Rating
2.7 to 5.5
-40 to +125
-40 to +85
Unit
V
°
C
Thermal Information
Symbol
θ
JA
θ
JC
P
D
Parameter
Thermal Resistance (Junction to Ambient)
Thermal Resistance (Junction to Case)
Internal Power Dissipation (@ T
A
= +25°
C)
Package
SO-8EP
SO-8EP
SO-8EP
Max
90
11
1100
Unit
°
C/W
mW
Electrical Characteristics
(@T
A
= +25° V
IN
= 5.0V, V
O
= 1.8V, C
IN
= 22µF, C
O
= 22µF, L = 2.2µH, unless otherwise specified.)
C,
Symbol
V
IN
V
O
V
O
V
FB
I
FB
LNR
LDR
I
Q
I
SD
I
LIM
f
OSC
R
DS(ON)
t
S
V
EH
V
EL
I
EN
OTP
OTH
Parameter
Input Voltage Range
Output Voltage Range
Regulated Output Voltage Accuracy
Regulated Feedback Voltage
FB Leakage Current
Output Voltage Line Regulation
Output Voltage Load Regulation
Quiescent Current
Shutdown Current
Peak Inductor Current
Oscillator Frequency
Drain-Source On-State Resistance
Start-Up Time
EN Threshold High
EN Threshold Low
EN Leakage Current
Over Temperature Protection
OTP Hysteresis
-
-
I
O
= 0 to 2A, V
IN
= 2.7 to 5.5V
-
V
O
=1V
V
IN
= 2.7V to 5V
I
O
= 0A to 2A
No Load
V
EN
= 0V
-
-
I
SW
= 100mA
High Side
Low Side
Test Conditions
Min
2.7
0.6
-2
0.588
-
-
-
-
-
3
-
-
-
-
1.5
-
-1.0
-
-
Typ
-
-
-
0.600
-
0.2
0.5
42
-
-
1.5
90
70
0.5
-
-
-
+150
+30
Max
5.5
V
IN
+2
0.612
0.2
-
-
90
1
-
1.8
-
-
3
-
0.3
+1.0
-
-
Unit
V
V
%
V
µA
%/V
%/A
µA
µA
A
MHz
Ω
Ω
ms
V
V
µA
°
C
°
C
From Enable to Output Regulation
-
-
V
IN
= V
EN
= 0V
-
-
PAM2310
Document number: DS36397 Rev. 2 - 2
3 of 11
www.diodes.com
February 2018
© Diodes Incorporated
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
