參數(shù)資料
型號(hào): LT1610
廠商: Linear Technology Corporation
英文描述: 1.7MHz, Single Cell Micropower DC/DC Converter
中文描述: 為1.7MHz,單細(xì)胞微功率DC / DC變換器
文件頁(yè)數(shù): 1/16頁(yè)
文件大?。?/td> 209K
代理商: LT1610
1
LT1610
1.7MHz, Single Cell
Micropower
DC/DC Converter
I
Uses Tiny Capacitors and Inductor
I
Internally Compensated
I
Low Quiescent Current: 30
μ
A
I
Operates with V
IN
as Low as 1V
I
3V at 30mA from a Single Cell
I
5V at 200mA from 3.3V
I
High Output Voltage Capability: Up to 28V
I
Low Shutdown Current: <1
μ
A
I
Automatic Burst Mode
TM
Switching at Light Load
I
Low V
CESAT
Switch: 300mV at 300mA
I
8-Lead MSOP and SO Packages
The LT
1610 is a micropower fixed frequency DC/DC
converter that operates from an input voltage as low as 1V.
Intended for small, low power applications, it switches at
1.7MHz, allowing the use of tiny capacitors and inductors.
The device can generate 3V at 30mA from a single cell
(1V) supply. An internal compensation network can be
connected to the LT1610’s V
C
pin, eliminating two exter-
nal components. No-load quiescent current of the LT1610
is 30
μ
A, and the internal NPN power switch handles a
300mA current with a voltage drop of 300mV.
The LT1610 is available in 8-lead MSOP and SO packages.
Burst Mode is a trademark of Linear Technology Corporation.
Figure 1. 1-Cell to 3V Step-Up Converter
Efficiency
I
Pagers
I
Cordless Phones
I
Battery Backup
I
LCD Bias
I
Portable Electronic Equipment
FEATURES
DESCRIPTIOU
APPLICATIU
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
C2
22
μ
F
C1
22
μ
F
1 CELL
L1
4.7
μ
H
D1
V
OUT
3V
30mA
C1, C2: AVX TAJA226M006R
D1: MOTOROLA MBR0520
L1: MURATA LQH1C4R7
1610 F01
+
+
R1
1M
R2
681k
6
5
2
7
4
1
8
3
V
IN
SW
PGND
FB
SHDN
GND
COMP
V
C
LT1610
LOAD CURRENT (mA)
0.1
E
85
80
75
70
65
60
55
50
1
10
100
1610 TA01
V
OUT
= 3V
V
IN
= 1.5V
V
IN
= 1V
V
IN
= 1.25V
相關(guān)PDF資料
PDF描述
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