LTC3525LESC6-3#TRMPBF Linear Technology, LTC3525LESC6-3#TRMPBF Datasheet

IC DC/DC CONV 3V SC70-6

LTC3525LESC6-3#TRMPBF

Manufacturer Part Number
LTC3525LESC6-3#TRMPBF
Description
IC DC/DC CONV 3V SC70-6
Manufacturer
Linear Technology
Type
Step-Up (Boost)r
Datasheet

Specifications of LTC3525LESC6-3#TRMPBF

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
3V
Current - Output
400mA
Voltage - Input
0.5 ~ 4.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-70-6, SC-88, SOT-363
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Frequency - Switching
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC3525LESC6-3#TRMPBFLTC3525LESC6-3
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC3525LESC6-3#TRMPBFLTC3525LESC6-3#TRPBF
Manufacturer:
RENESAS
Quantity:
860
Company:
Part Number:
LTC3525LESC6-3#TRMPBFLTC3525LESC6-3#TRPBF
Quantity:
2 500
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
APPLICATIONS
n
n
n
n
TYPICAL APPLICATION
0.9V TO 1.6V
Start-Up at 0.7V Typical, 0.88V Guaranteed
Up to 95% Efficiency
Output Disconnect and Inrush Current Limit
3V Fixed Output Voltage
Delivers 65mA at 3V from a 1V Input or 160mA
from a 1.8V Input
Burst Mode
V
Only Three External Components
V
<1µA Shutdown Current
Anti-Ringing Control
Short-Circuit and Overtemperature Protection
Tiny 6-Pin SC70 Package
MP3 Players
Portable Instruments
Glucose Meters
Digital Cameras
IN
IN
: 0.5V to 4.5V
> V
V
IN
OUT
*MURATA LQH32CN100K53
Operation
®
1µF
OFF ON
Operation: I
Q
V
SHDN
GND
= 7µA
IN
LTC3525L-3
10µH
L1*
V
GND
OUT
SW
Converter with Output Disconnect
3525 TA01
10µF
V
3V
65mA
Synchronous Step-Up DC/DC
OUT
DESCRIPTION
The LTC
up DC/DC converter with output disconnect that can
start up with an input as low as 0.7V. It offers a compact,
high efficiency alternative to charge pumps in single
cell or dual cell alkaline applications. Only three small
external components are required. The LTC3525L-3
generates a fixed 3V output voltage.
The device includes a 0.5 N-channel MOSFET switch
and a 0.85 P-channel synchronous rectifier. Peak switch
current ranges from 150mA to 400mA, depending on
load, providing enhanced efficiency. Quiescent current
is an ultralow 7µA, maximizing battery life in portable
applications.
Other features include <1µA shutdown current, anti-
ringing control and thermal shutdown. The LTC3525L-3
is available in a tiny 6-pin SC70 package.
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. Patents pending.
®
3525L-3 is a high efficiency synchronous step-
100
90
80
70
60
50
40
30
20
0.01
LTC3525L-3 Efficiency and Power
400mA Micropower
0.1
EFFICIENCY
Loss vs Load Current
1
LOAD (mA)
POWER LOSS
10
LTC3525L-3
V
V
100
IN
IN
LT3525 • TA02
= 2.4V
= 1.2V
1000
100
10
1
0.1
0.01
3525lfa
1

Related parts for LTC3525LESC6-3#TRMPBF

LTC3525LESC6-3#TRMPBF Summary of contents

Page 1

... The LTC3525L-3 is available in a tiny 6-pin SC70 package. 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. Patents pending. ...

Page 2

... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3525LESC6-3#PBF LTC3525LESC6-3#TRPBF LCPY 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

TYPICAL PERFORMANCE CHARACTERISTICS Maximum Output Current (for V to Drop 2.5%) OUT 300 250 200 150 100 50 0 0.5 1.0 1.5 2.0 2.5 V (V) IN 3525L G01 Efficiency and Power Loss vs Load 100 90 ...

Page 4

LTC3525L-3 TYPICAL PERFORMANCE CHARACTERISTICS Input Current and 1. OUT 1V/DIV INPUT CURRENT 100mA/DIV 100µs/DIV Output Voltage Ripple I OUT 5mA I OUT 40mA I OUT 80mA V = 1.2V 50µs/DIV 22µF OUT ...

Page 5

PIN FUNCTIONS SHDN (Pin 1): Logic-Controlled Shutdown Input. Connect to a voltage >0.88V to enable the LTC3525L-3. Connect to a voltage <0.3V to disable the LTC3525L-3. GND (Pins 2, 5): Ground. V (Pin 3): Input Voltage. The LTC3525L-3 is powered ...

Page 6

LTC3525L-3 OPERATION The LTC3525L high performance Burst Mode op- eration only, synchronous boost converter requiring only three small external components. Its simplicity and small size make it a high efficiency alternative to charge pump designs designed ...

Page 7

OPERATION During start-up, the synchronous rectifier is not enabled, and the internal P-channel synchronous rectifier acts as a follower, causing the peak voltage reach (V + 1V) typical. This limits inrush current by maintaining IN control of ...

Page 8

LTC3525L-3 OPERATION The maximum average load current that can be supported is given by: • η 0.3 • Amps ( O MAX V O where η is the efficiency (see Typical Performance Char- acteristics). The ...

Page 9

OPERATION Table 1. Inductor Vendor Information SUPPLIER PHONE Murata USA: (814) 237-1431 Coilcraft (847) 639-6400 Sumida USA: (847) 956-0666 Taiyo Yuden (408) 573-4150 Table 2. Capacitor Vendor Information SUPPLIER PHONE Murata USA: (814) 237-1431 Taiyo Yuden (408) 573-4150 TDK (847) ...

Page 10

LTC3525L-3 PACKAGE DESCRIPTION 0.47 0.65 MAX REF 2.8 BSC 1.8 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.10 – 0.40 GAUGE PLANE 0.15 BSC 0.26 – 0.46 NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. ...

Page 11

... Text update to Operations Shutdown Section Added Figure 1 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. LTC3525L-3 ...

Page 12

... ThinSOT Package : 0.85V to 4.5V 5V, IN OUT(MAX) = 7µA, I < 1µA, SC70 Package SD : 0. 5.25V, IN OUT(MAX) < 1µA, 2mm × 2mm DFN Package = 9µA/300µ 1110 REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 2006 V OUT 3V 160mA 10µF = 10µA, Q 3525lfa ...

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