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LTC1701ES5#PBF

Description
Switching Voltage Regulators LTC1701 - 1MHz Step-Down DC/DC Converter in SOT-23
CategoryPower/power management    The power supply circuit   
File Size193KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric Compare View All

LTC1701ES5#PBF Overview

Switching Voltage Regulators LTC1701 - 1MHz Step-Down DC/DC Converter in SOT-23

LTC1701ES5#PBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instructionPLASTIC, SOT-23, 5 PIN
Contacts5
Manufacturer packaging code05-08-1635
Reach Compliance Codecompliant
Is SamacsysN
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyCONSTANT OFF TIME
Maximum input voltage5.5 V
Minimum input voltage2.5 V
Nominal input voltage3.3 V
JESD-30 codeR-PDSO-G5
JESD-609 codee3
length2.95 mm
Humidity sensitivity level1
Number of functions1
Number of terminals5
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current1.1 A
Package body materialPLASTIC/EPOXY
encapsulated codeLSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.45 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency1000 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width1.625 mm
Base Number Matches1
LTC1701/LTC1701B
1MHz Step-Down
DC/DC Converters in SOT-23
FEATURES
s
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
s
Tiny 5-Lead SOT-23 Package
Uses Tiny Capacitors and Inductor
High Frequency Operation: 1MHz
High Output Current: 500mA
Low R
DS(ON)
Internal Switch: 0.28Ω
High Efficiency: Up to 94%
Current Mode Operation for Excellent Line
and Load Transient Response
Short-Circuit Protected
Low Quiescent Current: 135µA (LTC1701)
Low Dropout Operation: 100% Duty Cycle
Ultralow Shutdown Current: I
Q
< 1µA
Peak Inductor Current Independent of Inductor Value
Output Voltages from 5V Down to 1.25V
The LTC
®
1701/LTC1701B are the industry’s first SOT-23
step-down, current mode, DC/DC converters. Intended for
low to medium power applications, they operate from 2.5V
to 5.5V input voltage range and switch at 1MHz, allowing
the use of tiny, low cost capacitors and inductors 2mm or
less in height. The output voltage is adjustable from 1.25V
to 5V. A built-in 0.28Ω switch allows up to 0.5A of output
current at high efficiency. OPTI-LOOP
TM
compensation
allows the transient response to be optimized over a wide
range of loads and output capacitors.
The LTC1701 incorporates automatic power saving Burst
Mode
TM
operation to reduce gate charge losses when the
load current drops below the level required for continuous
operation. The LTC1701B operates continuously to very
low load currents to provide low ripple at the expense of
light load efficiency. With no load, the LTC1701 draws only
135µA. In shutdown, both devices draw less than 1µA,
making them ideal for current sensitive applications.
Their small size and switching frequency enables a
complete DC/DC converter function to consume less than
0.3 square inches of PC board area.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode and OPTI-LOOP are trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
s
PDAs/Palmtop PCs
Digital Cameras
Cellular Phones
Portable Media Players
PC Cards
Handheld Equipment
TYPICAL APPLICATION
V
IN
2.5V TO
5.5V
R4
1M
L1
4.7µH
V
IN
SW
D1
LTC1701
R2
121k
V
OUT
(2.5V/
500mA)
100
95
90
85
EFFICIENCY (%)
LTC1701
V
IN
= 3.3V
V
OUT
= 2.5V
+
C1
10µF
+
I
TH
/RUN
R3
GND
5.1k
C3
330pF
V
FB
R1
121k
C2
47µF
80
75
70
65
60
LTC1701B
C1: TAIYO YUDEN JMK316BJ106ML
C2: SANYO POSCAP 6TPA47M
D1: MBRM120L
L1: SUMIDA CD43-4R7
1701 F01a
55
50
1
10
100
LOAD CURRENT (mA)
1000
1701 F01b
Figure 1. 2.5V/500mA Step-Down Regulator
U
Efficiency Curve
U
U
1

LTC1701ES5#PBF Related Products

LTC1701ES5#PBF LTC1701ES5#TRM LTC1701ES5#TR
Description Switching Voltage Regulators LTC1701 - 1MHz Step-Down DC/DC Converter in SOT-23 Switching Voltage Regulators LTC1701 - 1MHz Step-Down DC/DC Converter in SOT-23 Switching Regulator LTC1701 - 1MHz Step-Down DC/DC Converter in SOT-23
Is it Rohs certified? conform to incompatible incompatible
Maker ADI ADI ADI
package instruction PLASTIC, SOT-23, 5 PIN PLASTIC, SOT-23, 5 PIN PLASTIC, SOT-23, 5 PIN
Reach Compliance Code compliant not_compliant not_compliant
Is Samacsys N N N
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology CONSTANT OFF TIME CONSTANT OFF TIME CONSTANT OFF TIME
Maximum input voltage 5.5 V 5.5 V 5.5 V
Minimum input voltage 2.5 V 2.5 V 2.5 V
Nominal input voltage 3.3 V 3.3 V 3.3 V
JESD-30 code R-PDSO-G5 R-PDSO-G5 R-PDSO-G5
JESD-609 code e3 e0 e0
length 2.95 mm 2.95 mm 2.95 mm
Humidity sensitivity level 1 1 1
Number of functions 1 1 1
Number of terminals 5 5 5
Maximum operating temperature 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C
Maximum output current 1.1 A 1.1 A 1.1 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code LSSOP LSSOP LSSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 235 235
Certification status Not Qualified Not Qualified Not Qualified
Maximum seat height 1.45 mm 1.45 mm 1.45 mm
surface mount YES YES YES
Switch configuration BUCK BUCK BUCK
Maximum switching frequency 1000 kHz 1000 kHz 1000 kHz
technology CMOS CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING GULL WING
Terminal pitch 0.95 mm 0.95 mm 0.95 mm
Terminal location DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 20 20
width 1.625 mm 1.625 mm 1.625 mm
Base Number Matches 1 1 1
ECCN code - EAR99 EAR99
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