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LTC660CS8 Datasheet

  • LTC660CS8

  • 100mA CMOS Voltage Converter

  • 12頁

  • LINER

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LTC660
100mA CMOS
Voltage Converter
FEATURES
s
s
s
s
s
s
DESCRIPTION
The LTC
廬
660 is a monolithic CMOS switched-capacitor
voltage converter. It performs supply voltage conversion
from positive to negative from an input range of 1.5V to
5.5V, resulting in complementary output voltages of
鈥?1.5V to 鈥?5.5V. It also performs a doubling at an input
voltage range of 2.5V to 5.5V, resulting in a doubled
output voltage of 5V to 11V. Only two external capacitors
are needed for the charge pump and charge reservoir
functions.
The converter has an internal oscillator that can be
overdriven by an external clock or slowed down when
connected to a capacitor. The oscillator runs at a 10kHz
frequency when unloaded. A higher frequency outside the
audio band can also be obtained if the BOOST pin is tied
to V
+
.
The LTC660 contains an internal oscillator, divide-by-two,
voltage level shifter and four power MOSFETs.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
s
Simple Conversion of 5V to 鈥?5V Supply
Output Drive: 100mA
R
OUT
: 6.5
鈩?/div>
(0.65V Loss at 100mA)
BOOST Pin (Pin 1) for Higher Switching Frequency
Inverting and Doubling Modes
Minimum Open Circuit Voltage Conversion
Efficiency: 99%
Typical Power Conversion Efficiency
with a 100mA Load: 88%
Easy to Use
APPLICATIONS
s
s
s
s
Conversion of 5V to
鹵5V
Supplies
Inexpensive Negative Supplies
Data Acquisition Systems
High Current Upgrade to LTC1044 or LTC7660
TYPICAL APPLICATION
Generating 鈥?5V from 5V
1
2
BOOST
V
+
8
Output Voltage vs
Load Current for V
+
= 5V
鈥?.0
5V INPUT
4
CAP
鈥?/div>
V
OUT
5
OUTPUT VOLTAGE (V)
+
C1
150碌F
7
CAP
+
OSC
LTC660
6
3
GND
LV
鈥?V
OUTPUT
鈥?.8
鈥?.6
C2
150碌F
鈥?.4
660 TA01
鈥?.2
鈥?.0
0
20
60
80
40
LOAD CURRENT (mA)
100
660 TA02
U
+
U
U
T
A
= 25擄C
R
OUT
= 6.5鈩?/div>
1

LTC660CS8 產品屬性

  • LTC660

  • 100

  • 集成電路 (IC)

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

  • -

  • 倍增器，反相

  • 可調式

  • 1

  • -1.5 V ~ -5.5 V，5 V ~ 11 V

  • 1.5 V ~ 5.5 V，2.5 V ~ 5.5 V

  • -

  • 10kHz，80kHz

  • 100mA

  • 無

  • 0°C ~ 70°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 管件

  • 8-SOIC

LTC660CS8相關型號PDF文件下載

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