LT1054CJ8 Linear Technology, LT1054CJ8 Datasheet

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LT1054CJ8

Manufacturer Part Number
LT1054CJ8
Description
100MA SW CAP VOLT CONVERTER
Manufacturer
Linear Technology
Type
Switched Capacitor (Charge Pump), Doubler, Invertingr
Datasheet

Specifications of LT1054CJ8

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
Adjustable
Current - Output
100mA
Frequency - Switching
25kHz
Voltage - Input
3.5 ~ 15 V
Operating Temperature
0°C ~ 100°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1054CJ8
Manufacturer:
LT
Quantity:
5 510
Part Number:
LT1054CJ8
Manufacturer:
MI
Quantity:
5 510
Part Number:
LT1054CJ8
Manufacturer:
LT
Quantity:
20 000
FEATURES
APPLICATIONS
BLOCK DIAGRAM
SHUTDOWN
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
FEEDBACK/
REFERENCE
Output Current: 100mA (LT1054)
Reference and Error Amplifier for Regulation
Low Loss: 1.1V at 100mA
Operating Range: 3.5V to 15V (LT1054)
External Shutdown
External Oscillator Synchronization
Can Be Paralleled
Pin Compatible with the LTC
Available in SW16 and SO-8 Packages
Voltage Inverter
Voltage Regulator
Negative Voltage Doubler
Positive Voltage Doubler
V
REF
6
1
*EXTERNAL CAPACITORS
R
R
+
125mA (LT1054L)
3.5V to 7V (LT1054L)
2.5V
OSC
7
OSC
®
1044/LTC7660
DRIVE
Q
Q
DRIVE
CAP
CAP
+
V
8
2
4
IN
+
C
IN
*
DRIVE
DRIVE
3
5
DESCRIPTION
+
The LT
voltage converter and regulator. The LT1054 provides
higher output current than previously available converters
with significantly lower voltage losses. An adaptive switch
driver scheme optimizes efficiency over a wide range of
output currents. Total voltage loss at 100mA output current
is typically 1.1V. This holds true over the full supply voltage
range of 3.5V to 15V. Quiescent current is typically 2.5mA.
The LT1054 also provides regulation, a feature not previ-
ously available in switched-capacitor voltage converters. By
adding an external resistive divider a regulated output can
be obtained. This output will be regulated against changes
in both input voltage and output current. The LT1054 can
also be shut down by grounding the feedback pin. Supply
current in shutdown is less than 100µA.
The internal oscillator of the LT1054 runs at a nominal
frequency of 25kHz. The oscillator pin can be used to ad-
just the switching frequency or to externally synchronize
the LT1054.
The LT1054 is pin compatible with previous converters
such the LTC1044/LTC7660.
LT1054 • BD
Switched-Capacitor Voltage
GND
–V
C
OUT
OUT
*
®
Converter with Regulator
1054 is a monolithic, bipolar, switched-capacitor
2
1
0
0
3.5V ≤ V
3.5V ≤ V
C
IN
INDICATES GUARANTEED
TEST POINT
LT1054/LT1054 Voltage Loss
LT1054/LT1054L
= C
25
OUT
IN
IN
OUTPUT CURRENT (mA)
≤ 15V (LT1054)
≤ 7V (LT1054L)
LT1054
= 100µF
50
75
T
T
T
LT1054L
J
J
J
100
= 125°C
= 25°C
= –55°C
1054 TA01•
125
1954lff
1

Related parts for LT1054CJ8

LT1054CJ8 Summary of contents

Page 1

... Negative Voltage Doubler ■ Positive Voltage Doubler ■ L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. BLOCK DIAGRAM V ...

Page 2

... LT1054IS8#TRPBF LT1054CSW#PBF LT1054CSW#TRPBF LT1054ISW#PBF LT1054ISW#TRPBF LT1054CJ8#PBF OBSOLETE PART LT1054CJ8#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: For more information on tape and reel specifications, go to: ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER Supply Current Supply Voltage Range Voltage Loss (V – OUT Output Resistance Oscillator Frequency Reference Voltage Regulated Voltage Line Regulation Load Regulation Maximum Switch Current Supply Current ...

Page 4

LT1054/LT1054L TYPICAL PERFORMANCE CHARACTERISTICS Shutdown Threshold 0.6 0.5 V PIN1 0.4 0.3 0.2 0.1 0 – 50 – 100 TEMPERATURE (°C) LT1054 • TPC01 Supply Current in Shutdown 120 100 PIN1 80 ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Regulated Output Voltage –4.7 –4.8 –4.9 –5.0 –5.1 –11.6 –11.8 –12.0 –12.2 –12.4 –12.6 – –25 TEMPERATURE (°C) PIN FUNCTIONS FB/SHDN (Pin 1): Feedback/Shutdown Pin. This pin has two functions. Pulling Pin 1 below the ...

Page 6

LT1054/LT1054L PIN FUNCTIONS transistor must be added as shown in Figure 1. This will prevent V (Pin 5) from being pulled above the ground OUT pin (Pin 3) during start-up. Any small, general purpose transistor such as 2N2222 or 2N2219 ...

Page 7

PIN FUNCTIONS is charging, the peak supply current will be approximately equal to 2.2 times the output current. During the time that C is delivering charge to C the supply current drops IN OUT to approximately 0.2 times the output ...

Page 8

LT1054/LT1054L APPLICATIONS INFORMATION R3 FB/SHDN CAP + 10µF GND TANTALUM CAP RESTART SHUTDOWN ) ) ) ) | | | | OUT OUT = + 1 ≈ 1.21V REF – ...

Page 9

APPLICATIONS INFORMATION where dV = peak-to-peak ripple and f = oscillator frequency. For output capacitors with significant ESR a second term must be added to account for the voltage step at the switch transitions. This step is approximately equal to: ...

Page 10

LT1054/LT1054L TYPICAL APPLICATIONS Basic Voltage Inverter + FB/SHDN V + CAP OSC + LT1054 100µF GND V REF – CAP V OUT Negative Voltage Doubler + FB/SHDN V + CAP OSC + LT1054 V GND V IN REF 100µF – ...

Page 11

TYPICAL APPLICATIONS +V OUT OUT –V OUT 5µF FB/SHDN + CAP OSC + LT1054 #1 10µF GND V REF – CAP V OUT 10k INPUT TTL 10k OR CMOS LOW FOR ON 0.022µF 1 ...

Page 12

LT1054/LT1054L TYPICAL APPLICATIONS V IN 3.5V TO 5.5V 20k 1N914 1N914 1N914 + 10µ 3. OUT I = 50mA OUT(MAX) FB/SHDN + CAP LT1054 #1 10 GND 10µF 1/2W – CAP + ...

Page 13

PACKAGE DESCRIPTION CORNER LEADS OPTION .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .300 BSC (7.62 BSC) .008 – .018 (0.203 – 0.457) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .400* (10.160) MAX 8 7 ...

Page 14

LT1054/LT1054L PACKAGE DESCRIPTION .245 MIN .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 (0.254 – 0.508) .008 – .010 (0.203 – 0.254) NOTE: 1. DIMENSIONS IN 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD ...

Page 15

... The LTC1054MJ8 is now available. Changes reflected throughout the data sheet Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... V : 1.2V, 1.5V 35µA, ThinSOT IN OUT Q : 2.7V to 5.5V 0.9V to 1.6V, 1.2V, 1.5V OUT : 2.7V to 5.5V 0.9V to 1.6V 50µA, DFN12 IN OUT Q LT 1210 REV F • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2010 0.002µF –V OUT LT1054 • TA14 = 9µA, Q 1054lff ...

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