LTC1682CMS8 Linear Technology, LTC1682CMS8 Datasheet - Page 12

• Manufacturer Part Number: LTC1682CMS8
• Description: IC MULTI CONFIG ADJ 90MA 8MSOP
• Manufacturer: Linear Technology
• Type: Step-Up (Boost), Switched Capacitor (Charge Pump), Doublerr

Specifications of LTC1682CMS8

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 2.5 ~ 5.5 V
• Current - Output: 90mA
• Frequency - Switching: 550kHz
• Voltage - Input: 1.8 ~ 4.4 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LTC1682/LTC1682-3.3/LTC1682-5
TYPICAL
RELATED PARTS
PART NUMBER
LTC1340
LTC1517-X
LT1521
LTC1522
LT1761 Series
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
APPLICATION
(REQUIRED FOR
START-UP)
DESCRIPTION
Low Noise, Voltage-Boosted Varactor Driver
Micropower, Regulated Charge Pump Doubler in SOT-23
300mA Low Dropout Regulator
Micropower, Regulated 5V Charge Pump
100mA Low Noise LDO Regulator in SOT-23
3V
1N4148
FMMT3904
D1
4.7 F
C4
U
3V TO 6V
Q1
V
Wide Input Range VCO Supply (V
IN
0.22 F
C1
C3
4.7 F
8
7
6
5
CPO
C
V
C
+
IN
–
LTC1682-5
SHDN
V
GND
FILT
OUT
1
3
2
4
IN
> 4.4V)
SHUTDOWN
R1
470
COMMENTS
Generates 5V Varactor Drive from 3V Supply
I
Micropower; Good Transient Response
Ultralow Power: Typical Operating I
I
CC
CC
C
1nF
FILT
= 6 A; Short Circuit/Thermal Protected
= 20 A; 20 V
C2
4.7 F
128235fs, sn128235 LT/TP 0799 4K • PRINTED IN USA
LOW NOISE
RMS
5V
Output Noise
LINEAR TECHNOLOGY CORPORATION 1999
VCO
1682 ta04
CC
= 6 A