參數(shù)資料
型號(hào): LT1304-5
廠商: Linear Technology Corporation
英文描述: Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown
中文描述: 微功率DC / DC轉(zhuǎn)換與低電池檢測(cè)器關(guān)機(jī)活動(dòng)
文件頁數(shù): 1/16頁
文件大小: 345K
代理商: LT1304-5
1
LT1304/LT1304-3.3/LT1304-5
Micropower
DC/DC Converters with
Low-Battery Detector
Active in Shutdown
The LT
1304 is a micropower step-up DC/DC converter
ideal for use in small, low voltage, battery-operated sys-
tems. The devices operate from a wide input supply range
of 1.5V to 8V. The LT1304-3.3 and LT1304-5 generate
regulated outputs of 3.3V and 5V and the adjustable
LT1304 can deliver output voltages up to 25V. Quiescent
current, 120
μ
A in active mode, decreases to just 10
μ
A in
shutdown with the low-battery detector still active. Peak
switch current, internally set at 1A, can be reduced by
adding a single resistor from the I
LIM
pin to ground. The
high speed operation of the LT1304 allows the use of
small, surface-mountable inductors and capacitors. The
LT1304 is available in an 8-lead SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO
S
U
I
2-, 3-, or 4-Cell to 5V or 3.3V Step-Up
I
Portable Instruments
I
Bar Code Scanners
I
Palmtop Computers
I
Diagnostic Medical Instrumentation
I
Personal Data Communicators/Computers
I
5V at 200mA from Two Cells
I
10
μ
A Quiescent Current in Shutdown
I
Operates with V
IN
as Low as 1.5V
I
Low-Battery Detector Active in Shutdown
I
Low Switch V
CESAT
: 370mV at 1A Typical
I
120
μ
A Quiescent Current in Active Mode
I
Switching Frequency Up to 300kHz
I
Programmable Peak Current with One Resistor
I
8-Lead SO Package
FEATURES
DESCRIPTIO
N
U
TYPICAL APPLICATIO
N
U
Efficiency
LOAD CURRENT (mA)
40
50
60
70
80
90
E
1304 TA02
0.1
1
10
500
100
V
IN
= 3.3V
V
IN
= 2.5V
V
IN
= 1.8V
V
IN
SW
SHDN
GND
SENSE
LBI
3
4
8
2
5
7
6
1
LBO
I
LIM
LT1304-5
+
+
100k
100
μ
F
NC
*
**
604k
100
μ
F
2 CELLS
499k
22
μ
H*
D1**
5V
200mA
LBO
LOW WHEN
V
BAT
< 2.2V
SUMIDA CD54-220
1N5817
1304 TA01
SHUTDOWN
2-Cell to 5V Step-Up Converter with Low-Battery Detect
相關(guān)PDF資料
PDF描述
LT1304 Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown
LT1304CS8 Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown
LT1304CS8-3.3 Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown
LT1304CS8-5 Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown
LT1306ES8 Synchronous, Fixed Frequency Step-Up DC/DC Converter
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