EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC1144CN8

Description
Charge Pump STPDN -2V to -18V 50mA Automotive 8-Pin PDIP N
File Size187KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LTC1144CN8 Overview

Charge Pump STPDN -2V to -18V 50mA Automotive 8-Pin PDIP N

LTC1144CN8 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
FunctionStep Down
Process TechnologyCMOS
Output TypeAdjustable
Output Voltage (V)-2 to -18
Minimum Operating Supply Voltage (V)2
Maximum Operating Supply Voltage (V)18
Maximum Supply Current (mA)1.1
Maximum Power Dissipation (mW)500
Output Current (mA)50
Switching Frequency (kHz)10(Typ)
Efficiency (%)93(Typ)
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
Supplier Temperature GradeCommercial
Pin Count8
Standard Package NameDIP
Supplier PackagePDIP N
MountingThrough Hole
Package Height3.3
Package Length10.16(Max)
Package Width6.48
PCB changed8
Lead ShapeThrough Hole
LTC1144
Switched-Capacitor
Wide Input Range
Voltage Converter
with Shutdown
FeaTures
n
n
n
n
n
n
DescripTion
The
LTC
®
1144
is a monolithic CMOS switched-capacitor
voltage converter. It performs supply voltage conversion
from positive to negative from an input range of 2V to
18V, resulting in complementary output voltages of –2V to
–18V. Only two noncritical 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
SHDN
pin reduces supply current to 8µA and can
be used to save power when the converter is not in use.
The LTC1144 contains an internal oscillator, divide-by- two,
voltage level shifter, and four power MOSFETs. A special
logic circuit will prevent the power N-channel switch
substrate from turning on.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
n
n
Wide Operating Supply Voltage Range: 2V to 18V
Boost Pin (Pin 1) for Higher Switching Frequency
Simple Conversion of 15V to –15V Supply
Low Output Resistance: 120Ω Maximum
Power Shutdown to 8µA with
SHDN
Pin
Open Circuit Voltage Conversion Efficiency:
99.9% Typical
Power Conversion Efficiency: 93% Typical
Easy to Use
applicaTions
n
n
n
n
n
n
n
Conversion of 15V to ±15V Supplies
Inexpensive Negative Supplies
Data Acquisition Systems
High Voltage Upgrade to LTC1044 or 7660
Voltage Division and Multiplications
Automotive Applications
Battery Systems with Wall Adapter/Charger
Typical applicaTion
Generating –15V from 15V
LTC1144
1
BOOST
CAP
+
GND
CAP
V
+
OSC
SHDN
V
OUT
8
7
OUTPUT VOLTAGE (V)
6
5
10µF
1144 TA01
Output Voltage vs Load Current, V
+
= 15V
–15
R
OUT
= 56
T
A
= 25°C
15V INPUT
–14
10µF
+
2
3
4
–15V OUTPUT
–13
+
–12
–11
–10
0
10
30
40
20
LOAD CURRENT (mA)
50
1144 TA02
1144fa
For more information
www.linear.com/LTC1144
1
This circuit is for audio amplification. Please explain it to me.
Please guide me on the role of C14, C15, R27, and R28 in the circuit...
xiaolong1231 Analog electronics
stm8s103 interrupt timing does not work
void TIM1_Init(void) { TIM1_IER=0X00; TIM1_EGR=0X00; TIM1_PSCRH=0X3E[size=12px];//15999 division, counting period is 1ms[/size] TIM1_PSCRL=0X7F; TIM1_ARRH=0X01[size=12px];//The automatic reload regist...
sang523 stm32/stm8
High-speed ADC common-mode input range setting [Figure]
The input common-mode voltage range (Vcm) is very important for communication equipment that includes baseband sampling and high-speed ADC. This article explains how to set the common-mode input range...
JasonYoo RF/Wirelessly
Help
Why doesn't the running light controlled by the microcontroller flash? Urgent!...
chenpeng MCU
Modification of 4-20mA two-wire passive digital display meter Part 10 (Small task completed)
Say goodbye to the "lower body": cut and break the reserved slotted connection, and the modified board can finally be released independently:All the previous assistance was for today. After various au...
7905 onsemi and Avnet IoT Innovation Design Competition
2410 Under what circumstances does I2C generate an interrupt?
Recently, I have come into contact with several slave devices with I2C interfaces. I also have some knowledge of WinCE stream drivers for I2C. I started to implement an I2C stream driver using the [qu...
snowie Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1597  857  1918  1906  239  33  18  39  5  10 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号