LT1054CSW Linear Technology, LT1054CSW Datasheet

IC VOLT CONV SW-CAP W/REG 16SOIC

LT1054CSW

Manufacturer Part Number
LT1054CSW
Description
IC VOLT CONV SW-CAP W/REG 16SOIC
Manufacturer
Linear Technology
Type
Switched Capacitor (Charge Pump), Doubler, Invertingr
Datasheet

Specifications of LT1054CSW

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
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1054CSW
Manufacturer:
LT/凌特
Quantity:
20 000
Part Number:
LT1054CSW#PBF
Manufacturer:
LINEAR/凌特
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 LT1054CSW

LT1054CSW 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

... PART MARKING PACKAGE DESCRIPTION LT1054CN8 8-Lead Plastic DIP LT1054IN8 8-Lead Plastic DIP LT1054MJ8 8-Lead Ceramic DIP 1054 8-Lead Plastic SO 1054L 8-Lead Plastic SO 1054I 8-Lead Plastic SO LT1054CSW 16-Lead Plastic SO LT1054ISW 16-Lead Plastic SO LT1054CJ8 8-Lead Ceramic DIP http://www.linear.com/leadfree/ http://www.linear.com/tapeandreel/ TOP VIEW ...

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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