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PDF PAM2319 Data sheet ( Hoja de datos )
| Número de pieza | PAM2319 | |
| Descripción | DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PAM2319 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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A Product Line of
Diodes Incorporated
PAM2319
DUAL HIGH-EFFICIENCY PWM STEP-DOWN DC-DC CONVERTER
Description
The PAM2319 is a dual step-down current-mode, DC-DC converter.
At heavy load, the constantf requency PWM control performs
excellent stability and transient response. To ensure the longest
battery life in portable applications, the PAM2319 provides a power-
saving Pulse-Skipping Modulation (PSM) mode to reduce quiescent
current under light load operation.
The PAM2319 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, USB, and other standard power sources. The dual output
voltages are adjustable from 1.0V to 3.3V. Both channels employ
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
0.1µA. Other key features include under-voltage lockout, soft-start,
short circuit protection and thermal shutdown.
Pin Assignments
Features
Supply Voltage: 2.7V to 5.5V
Output Voltage:
Vo1 ADJ/1000mA
Vo2 ADJ/2000mA
Low Quiescent Current: Channel 1: 40µA; Channel 2: 55µA
High Efficiency:
Switching Frequency: 3MHz(Channel 1)
2.5MHz(Channel 2)
Internal Synchronous Rectifier
Soft Start
Under-Voltage Lockout
Short Circuit Protection
Thermal Shutdown
Small W-DFN3X3-12L Pb-Free/Halogen Free Package
RoHS/REACH Compliant
Applications
Portable Electronics
Personal Information Appliances
Wireless and DSL Modems
PAM2319
Document number: DSxxxxx Rev. 1 - 1
1 of 12
www.diodes.com
November 2012
© Diodes Incorporated
1 page  
A Product Line of
Diodes Incorporated
PAM2319
Electrical Characteristics (@TA = +25°C, VIN = 3.3V, VO = 1.2V, CIN = 10µF, CO = 10µF, L = 1µH, unless otherwise specified.)
Channel 2
Parameter
Input Voltage Range
UVLO Threshold
Regulated Feedback Voltage
Reference Voltage Line Regulation
Regulated Output Voltage Accuracy
Peak Inductor Current
Output Voltage Line Regulation
Output Voltage Load Regulation
Quiescent Current
Shutdown Current
Oscillator Frequency
Drain-Source On-State Resisitance
SW Leakage Current
Efficiency
PSM Threshold
EN Threshold High
EN Threshold Low
EN Leakage Current
Soft-Start
Over Temperature Protection
OTP Hysteresis
Symbol
VIN
VUVLO
VFB
∆VFB
VO
IPK
LNR
LDR
IQ
ISD
fOSC
RDS(ON)
ILSW
η
ITH
VEH
VEL
IEN
TON
OTP
OTH
Test Conditions
VIN Rising
Hysteresis
VIN Falling
IO = 100mA
VO = 90%
VIN = 2.7V to 5V, IO = 10mA
IO = 1mA to 1000mA
No Load
VEN = 0V
VO = 100%
P MOSFET
N MOSFET
Output1, IO = 500mA, VIN = 3.3V
VIN = 3.3V
From EN1 to Output
Min
2.7
12
0.588
-3
-2
1.5
Typ
2.6
250
0.600
0.3
3
0.2
55
0.1
2.5
0.11
0.85
±0.01
87
250
±0.01
250
150
30
Max
5.5
2.7
0.612
+3
0.5
+2
100
1.0
1
450
0.3
Units
V
V
mV
V
V
%/V
%
A
%/V
%
µA
µA
MHz
Ω
Ω
µA
%
mA
V
V
µA
ms
°C
°C
PAM2319
Document number: DSxxxxx Rev. 1 - 1
5 of 12
www.diodes.com
November 2012
© Diodes Incorporated
5 Page 
Marking Information
A Product Line of
Diodes Incorporated
PAM2319
Package Outline Dimensions (All dimensions in mm.)
W-DFN3x3-12
PAM2319
Document number: DSxxxxx Rev. 1 - 1
11 of 12
www.diodes.com
November 2012
© Diodes Incorporated
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet PAM2319.PDF ] | |
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