LTC1516IS8#PBF Linear Technology, LTC1516IS8#PBF Datasheet

IC SW CAP/DBLR 5V 50MA 8SOIC

LTC1516IS8#PBF

Manufacturer Part Number
LTC1516IS8#PBF
Description
IC SW CAP/DBLR 5V 50MA 8SOIC
Manufacturer
Linear Technology
Type
Switched Capacitor (Charge Pump), Doublerr
Datasheet

Specifications of LTC1516IS8#PBF

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
50mA
Frequency - Switching
600kHz
Voltage - Input
2 ~ 5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1516IS8#PBFLTC1516IS8
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC1516IS8#PBFLTC1516IS8
Manufacturer:
LT/凌特
Quantity:
20 000
FEATURES
APPLICATIONS
TYPICAL
V
2-Cell to 5V Conversion
Li-Ion Battery Backup Supplies
Local 3V to 5V Conversion
5V Flash Memory Programmer
Smart Card Readers
Ultralow Power: Typical Operating I
Short Circuit/Thermal Protection
Regulated 5V 4% Output
2V to 5V Input Range
No Inductors
I
Output Current: 20mA (V
Shutdown Disconnects Load from V
Internal Oscillator: 600kHz
Compact Application Circuit (0.1 in
8-Pin SO Package
IN
CC
= 2V TO 5V
in Shutdown: < 1 A
Figure 1. Regulated 5V Output from a 2V to 5V Input
+
APPLICATION
10 F
50mA (V
U
+
10 F
V
I
I
OUT
OUT
OUT
= 0mA TO 20mA, V
= 0mA TO 50mA, V
= 5V 4%
1
2
3
4
IN
IN
C1
V
V
C2
> 2V)
> 3V)
IN
OUT
+
+
LTC1516
U
0.22 F
0.22 F
2
IN
IN
)
IN
SHDN
CC
GND
C2
C1
2V
3V
= 12 A
8
7
6
5
ON/OFF
1516 • F01
The LTC
converter that produces a regulated 5V output from a 2V
to 5V supply. Extremely low supply current (12 A typical
with no load, < 1 A in shutdown) and low external parts
count (two 0.22 F flying capacitors and two 10 F capaci-
tors at V
small, light load battery-powered applications. Typical
efficiency (V
between 50 A and 50mA. Modulating the SHDN pin keeps
the typical efficiency above 70% with load currents all the
way down to 10 A.
The LTC1516 operates as either a doubler or a tripler
depending on V
overall efficiency. The part has thermal shutdown and can
survive a continuous short from V
down the load is disconnected from V
The LTC1516 is available in an 8-pin SO package in both
commercial and industrial temperature grades.
DESCRIPTION
, LTC and LT are registered trademarks of Linear Technology Corporation.
Micropower, Regulated
IN
®
1516 is a micropower charge pump DC/DC
and V
90
80
70
60
50
0.01
IN
V
IN
= 3V) exceeds 70% with load currents
IN
OUT
Efficiency vs Output Current
= 3V
DC/DC Converter
and output load conditions to improve
5V Charge Pump
) make the LTC1516 ideally suited for
SHDN = 0V
U
0.1
OUTPUT CURRENT (mA)
LOW I
(SEE FIGURE 3)
Q
MODE
1
10
OUT
IN
1516 • TA01
to GND. In shut-
.
LTC1516
100
1

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LTC1516IS8#PBF Summary of contents

Page 1

... V overall efficiency. The part has thermal shutdown and can survive a continuous short from V down the load is disconnected from V The LTC1516 is available in an 8-pin SO package in both commercial and industrial temperature grades. , LTC and LT are registered trademarks of Linear Technology Corporation. 0. – ...

Page 2

LTC1516 ABSOLUTE MAXIMUM (Note GND ...................................................– 0. GND ................................................– 0. OUT SHDN to GND ..............................................– 0. Short-Circuit Duration ............................. Indefinite OUT Operating Temperature Range ...

Page 3

W U TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Input Voltage 10mA OUT 2.0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) 1516 • G01 Output Voltage vs Input Voltage 5. 20mA ...

Page 4

LTC1516 W BLOCK DIAGRAM S1A + C2 0.22 F – C2 S1B S1C + C1 0.22 F – C1 S1D CHARGE PUMP CHARGE PUMP SHOWN IN TRIPLER MODE, DISCHARGE CYCLE U U APPLICATIONS INFORMATION Operation ...

Page 5

U U APPLICATIONS INFORMATION Short-Circuit/Thermal Protection During short-circuit conditions, the LTC1516 will draw between 200mA and 400mA from V the junction temperature. On-chip thermal shutdown circuitry disables the charge pump once the junction temperature exceeds 135 C, and reenables the ...

Page 6

LTC1516 U U APPLICATIONS INFORMATION Ultralow Quiescent Current (I < Regulated Q Supply The LTC1516 contains an internal resistor divider (refer to Block Diagram) which draws only 1.5 A (typ) from V During no-load conditions, the internal load ...

Page 7

... TO 100mA, V OUT Figure 5. Paralleling Devices 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights ...

Page 8

... I OUT LOW V LOADS OUT OUT 0.189 – 0.197* (4.801 – 5.004 0.150 – 0.157** 0.228 – 0.244 (3.810 – 3.988) (5.791 – 6.197) SO8 0695 LT/GP 0796 7K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1996 –1.4V TO – 5mA 1516 • TA03 ...

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