LTC1754ES6-5#TR Linear Technology, LTC1754ES6-5#TR Datasheet

IC CHARGE PUMP REG SHTDN SOT23-6

LTC1754ES6-5#TR

Manufacturer Part Number
LTC1754ES6-5#TR
Description
IC CHARGE PUMP REG SHTDN SOT23-6
Manufacturer
Linear Technology
Type
Switched Capacitor (Charge Pump)r
Datasheet

Specifications of LTC1754ES6-5#TR

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
5V
Current - Output
50mA
Frequency - Switching
700kHz
Voltage - Input
2.7 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-

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Part Number
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Quantity
Price
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Part Number:
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Manufacturer:
LT
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LT
Quantity:
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Manufacturer:
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Manufacturer:
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Company:
Part Number:
LTC1754ES6-5#TR
Manufacturer:
LT/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Regulated 3.3V Output from 2V to 4.4V Input
Regulated 5V Output from 2.7V to 5.5V Input
V
Ultralow Power: I
Regulated Output Voltage: 3.3V 4%, 5V 4%
5V Output Current: 50mA (V
3.3V Output Current: 40mA (V
No Inductors Needed
Very Low Shutdown Current: <1 A
Shutdown Disconnects Load from V
Internal Oscillator: 600kHz
Short-Circuit and Overtemperature Protected
Ultrasmall Application Circuit: (0.052 Inch
6-Pin SOT-23 Package
SIM Interface Supplies for GSM Cellular Telephones
White LED Power Supplies
Li-Ion Battery Backup Supplies
Handheld Computers
Smart Card Readers
PCMCIA Local 5V Supplies
OUT
ON/OFF
10 F
I
I
I
I
OUT
OUT
OUT
OUT
= 0mA TO 25mA, V
= 0mA TO 50mA, V
1
2
3
= 0mA TO 20mA, V
= 0mA TO 40mA, V
V
V
V
LTC1754-X
GND
SHDN
OUT
OUT
OUT
= 3.3V 4%
= 5V 4%
V
U
C
C
IN
+
IN
5
6
4
= 13 A
IN
IN
IN
IN
> 2.0V
> 2.5V
> 2.7V
> 3.0V
1 F
1754 TA01
10 F
IN
U
IN
V
IN
3.0V)
2.5V)
IN
3.40
3.35
3.30
3.25
3.20
2
)
2.0
Output Voltage vs Supply Voltage
I
C
C
OUT
OUT
FLY
= 20mA
= 1 F
= 10 f
2.5
SUPPLY VOLTAGE (V)
T
T
T
A
LTC1754-3.3
A
A
= –40 C
= 85 C
= 25 C
3.0
DESCRIPTIO
The LTC
converter that produces a regulated output. The input
voltage range is 2V to 4.4V for 3.3V output and 2.7V to
5.5V for 5V output. Extremely low operating current and a
low external parts count (one flying capacitor and two
small bypass capacitors at V
ideally suited for small, battery-powered applications. The
total component area of the application circuit shown
below is only 0.052 inch
The LTC1754 operates as a Burst Mode
tor voltage doubler to produce a regulated output. It has
thermal shutdown capability and can survive a continuous
short circuit from V
The LTC1754 is available in a 6-pin SOT-23 package.
Burst Mode is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
3.3V/5V Charge Pump with
3.5
®
1754 is a micropower charge pump DC/DC
4.0
Micropower, Regulated
LTC1754-3.3/LTC1754-5
1754 TA02
4.5
Shutdown in SOT-23
U
OUT
to GND.
5.15
5.10
5.05
5.00
4.95
4.90
4.85
2
.
IN
2.5
Output Voltage vs Supply Voltage
I
C
C
and V
OUT
OUT
FLY
= 25mA
3.0
= 1 F
T
= 10 F
A
= 25 C
OUT
SUPPLY VOLTAGE (V)
3.5
LTC1754-5
) make the LTC1754
TM
switched capaci-
4.0
T
T
A
A
= –40 C
= 85 C
4.5
5.0
1574 TA03
1
5.5

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LTC1754ES6-5#TR Summary of contents

Page 1

... It has thermal shutdown capability and can survive a continuous short circuit from V The LTC1754 is available in a 6-pin SOT-23 package. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a trademark of Linear Technology Corporation. LTC1754-3.3 Output Voltage vs Supply Voltage 3 ...

Page 2

... I = 0mA OUT SHDN SHDN = V IN SHDN = 0V Note 3: The LTC1754ES6-X is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 4: Based on long term current density limitations ORDER PART ...

Page 3

W U TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage vs Output Current 3. OUT FLY 3. 2. 3.25 3.20 ...

Page 4

LTC1754-3.3/LTC1754 TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage vs Output Current 5. OUT 5. FLY 5. 5. 2.7V IN ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS LTC1754-3.3. LTC1754- unless otherwise noted. A Efficiency vs Supply Voltage 100 FLY 90 80 LTC1754 25mA OUT 70 ...

Page 6

LTC1754-3.3/LTC1754 APPLICATIO S I FOR ATIO Operation (Refer To Block Diagram) The LTC1754 uses a switched-capacitor charge pump to boost regulated output voltage. Regulation is IN achieved by sensing the output voltage through an internal ...

Page 7

U U APPLICATIO S I FOR ATIO range. The capacitor manufacturer’s data sheet should be consulted to determine what style and value of capacitor is needed to ensure 0 all temperatures. Output Ripple Low frequency regulation mode ripple ...

Page 8

LTC1754-3.3/LTC1754 APPLICATIO S I FOR ATIO signal will keep V in regulation under no-load condi- OUT tions. As the V load current increases, the frequency OUT with which the LTC1754 is taken out of shutdown must also be ...

Page 9

U TYPICAL APPLICATIO S Low Power Battery Backup with Autoswitchover and No Reverse Current 1N4148 75k 1.2M 475k – OUT + 10 ...

Page 10

LTC1754-3.3/LTC1754-5 U TYPICAL APPLICATIO ON/OFF 3V TO 4.4V Li-Ion BATTERY ON/OFF ON/OFF 10 5V, 100mA Step-Up Generator from – ...

Page 11

... MOLD FLASH SHALL NOT EXCEED 0.254mm 5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ) 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. U Dimensions in inches (millimeters), unless otherwise noted ...

Page 12

... Output at 3V, 3. 10V Input 50mA Output 20mA Output 20mA Output 1.2V to 15V 34V Output Q IN Output Noise = 60 V Si4435DY OUT I 50mA OUT 10 F 1754 TA05 = 3.5V to 15V, SO-8 Package IN = 500 2.5V to 5.5V Output RMS 175435f LT/TP 0400 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1999 ...

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