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LT1302CN8-5 Datasheet

  • LT1302CN8-5

  • Micropower High Output Current Step-Up Adjustable and Fixed ...

  • 16頁

  • LINER

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LT1302/LT1302-5
Micropower
High Output Current
Step-Up Adjustable and
Fixed 5V DC/DC Converters
FEATURES
s
s
s
s
s
s
DESCRIPTIO
s
s
5V at 600mA or 12V at 120mA from 2-Cell Supply
200碌A Quiescent Current
Logic Controlled Shutdown to 15碌A
Low V
CESAT
Switch: 310mV at 2A Typical
Burst Mode
TM
Operation at Light Load
Current Mode Operation for Excellent
Line and Load Transient Response
Available in 8-Lead SO or PDIP
Operates with Supply Voltage as Low as 2V
The LT
廬
1302/LT1302-5 are micropower step-up DC/DC
converters that maintain high efficiency over a wide
range of output current. They operate from a supply
voltage as low as 2V and feature automatic shifting
between Burst Mode operation at light load, and current
mode operation at heavy load.
The internal low loss NPN power switch can handle
current in excess of 2A and switch at frequencies up to
400kHz. Quiescent current is just 200碌A and can be
further reduced to 15碌A in shutdown.
Available in 8-pin PDIP or 8-pin SO packaging, the LT1302/
LT1302-5 have the highest switch current rating of any
similarly packaged switching regulators presently on the
market.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATI
s
s
s
s
s
S
Notebook and Palmtop Computers
Portable Instruments
Personal Digital Assistants
Cellular Telephones
Flash Memory
Burst Mode is a trademark of Linear Technology Corporation.
TYPICAL APPLICATI
L1
10碌H
6
7
V
IN
SW
PGND
GND
1
NC
5
I
T
SHDN
3
4
SHUTDOWN
2-Cell to 5V Converter Efficiency
90
88
86
EFFICIENCY (%)
2 CELLS
+
C1
100碌F
C3
0.1碌F
D1
LT1302-5
8
SENSE
V
C
84
82
80
78
76
74
+
C2
100碌F
2
R
C
20k
C
C
0.01碌F
OUTPUT
5V
600mA
C1 = C2 = SANYO OS-CON
L1 = COILTRONICS CTX10-3
COILCRAFT DO3316-103
72
LT1302 鈥?F01
70
1
10
100
LOAD CURRENT (mA)
1000
LT1302 鈥?TA02
D1 = MOTOROLA MBRS130LT3
Figure 1. 2-Cell to 5V/600mA DC/DC Converter
U
V
IN
= 3V
V
IN
= 2.5V
V
IN
= 2V
UO
UO
1

LT1302CN8-5 產品屬性

  • LT1302/-5

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器

  • -

  • 升壓（升壓）

  • 固定

  • 1

  • 5V

  • 2 V ~ 8 V

  • 電流模式，混合

  • -

  • 600mA

  • 無

  • 0°C ~ 70°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 管件

  • 8-PDIP

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