LT1761IS5-BYP#TRMPBF Linear Technology, LT1761IS5-BYP#TRMPBF Datasheet

IC LDO REG 100MA ADJ TSOT23-5

LT1761IS5-BYP#TRMPBF

Manufacturer Part Number
LT1761IS5-BYP#TRMPBF
Description
IC LDO REG 100MA ADJ TSOT23-5
Manufacturer
Linear Technology
Datasheet

Specifications of LT1761IS5-BYP#TRMPBF

Regulator Topology
Positive Adjustable
Voltage - Output
1.22 ~ 20 V
Voltage - Input
1.8 ~ 20 V
Voltage - Dropout (typical)
0.3V @ 100mA
Number Of Regulators
1
Current - Output
100mA
Current - Limit (min)
110mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-5, TSOT-5, TSOP-5
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LT1761IS5-BYP#TRMPBF

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LT1761IS5-BYP#TRMPBFLT1761IS5-BYP
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LT1761IS5-BYP#TRMPBFLT1761IS5-BYP
0
Company:
Part Number:
LT1761IS5-BYP#TRMPBF
0
Company:
Part Number:
LT1761IS5-BYP#TRMPBFLT1761IS5-BYP#TRPBF
Manufacturer:
ADI/亚德诺
Quantity:
20 000
APPLICATIONS
TYPICAL APPLICATION
FEATURES
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5.4V TO
Low Noise: 20μV
Low Quiescent Current: 20μA
Wide Input Voltage Range: 1.8V to 20V
Output Current: 100mA
Very Low Shutdown Current: <0.1μA
Low Dropout Voltage: 300mV at 100mA
Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2V, 2.5V,
2.8V, 3V, 3.3V, 5V
Adjustable Output from 1.22V to 20V
Stable with 1μF Output Capacitor
Stable with Aluminum, Tantalum or
Ceramic Capacitors
Reverse-Battery Protected
No Reverse Current
No Protection Diodes Needed
Overcurrent and Overtemperature Protected
Available in Tiny 5-Lead TSOT-23 Package
Cellular Phones
Pagers
Battery-Powered Systems
Frequency Synthesizers
Wireless Modems
20V
V
IN
1μF
5V Low Noise Regulator
RMS
IN
SHDN
(10Hz to 100kHz)
LT1761-5
GND
OUT
BYP
0.01μF
+
1761 TA01
10μF
5V AT100mA
20μV
RMS
NOISE
DESCRIPTION
The LT
dropout regulators. With an external 0.01μF bypass
capacitor, output noise drops to 20μV
100kHz bandwidth. Designed for use in battery-powered
systems, the low 20μA quiescent current makes them an
ideal choice. In shutdown, quiescent current drops to less
than 0.1μA. The devices are capable of operating over an
input voltage from 1.8V to 20V, and can supply 100mA of
output current with a dropout voltage of 300mV. Quiescent
current is well controlled, not rising in dropout as it does
with many other regulators.
The LT1761 regulators are stable with output capacitors as
low as 1μF . Small ceramic capacitors can be used without
the series resistance required by other regulators.
Internal protection circuitry includes reverse battery
protection, current limiting, thermal limiting and reverse
current protection. The device is available in fi xed output
voltages of 1.2V, 1.5V, 1.8V, 2V, 2.5V, 2.8V, 3V, 3.3V and
5V, and as an adjustable device with a 1.22V reference
voltage. The LT1761 regulators are available in the 5-lead
TSOT-23 package.
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
100μV/DIV
®
1761 series are micropower, low noise, low
V
OUT
Regulators in TSOT-23
10Hz to 100kHz Output Noise
100mA, Low Noise,
LDO Micropower
LT1761 Series
RMS
1761 TA01b
over a 10Hz to
20μV
RMS
1761sff
1

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LT1761IS5-BYP#TRMPBF Summary of contents

Page 1

... The LT1761 regulators are available in the 5-lead TSOT-23 package. L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...

Page 2

... LT1761ES5-1.8#PBF LT1761ES5-1.8#TRPBF LT1761IS5-1.8#PBF LT1761IS5-1.8#TRPBF LT1761MPS5-1.8#PBF LT1761MPS5-1.8#TRPBF LT1761ES5-2#PBF LT1761ES5-2#TRPBF LT1761IS5-2#PBF LT1761IS5-2#TRPBF LT1761ES5-2.5#PBF LT1761ES5-2.5#TRPBF LT1761IS5-2.5#PBF LT1761IS5-2.5#TRPBF LT1761ES5-2.8#PBF LT1761ES5-2.8#TRPBF LT1761IS5-2.8#PBF LT1761IS5-2.8#TRPBF LT1761ES5-3#PBF LT1761ES5-3#TRPBF LT1761IS5-3#PBF LT1761IS5-3#TRPBF LT1761ES5-3.3#PBF LT1761ES5-3.3#TRPBF LT1761IS5-3.3#PBF LT1761IS5-3.3#TRPBF LT1761MPS5-3.3#PBF LT1761MPS5-3.3#TRPBF 2 (Note 1) Output Short-Circuit Duration ........................ Indefi nite Operating Junction Temperature Range E, I Grade (Note 2) ............................. –40°C to 125°C MP Grade (Note 2) ............................. – ...

Page 3

... LT1761IS5-1.5 LT1761IS5-1.5#TR LT1761ES5-1.8 LT1761ES5-1.8#TR LT1761IS5-1.8 LT1761IS5-1.8#TR LT1761MPS5-1.8 LT1761MPS5-1.8#TR LT1761ES5-2 LT1761ES5-2#TR LT1761IS5-2 LT1761IS5-2#TR LT1761ES5-2.5 LT1761ES5-2.5#TR LT1761IS5-2.5 LT1761IS5-2.5#TR LT1761ES5-2.8 LT1761ES5-2.8#TR LT1761IS5-2.8 LT1761IS5-2.8#TR LT1761ES5-3 LT1761ES5-3#TR LT1761IS5-3 LT1761IS5-3#TR LT1761ES5-3.3 LT1761ES5-3.3#TR LT1761IS5-3.3 LT1761IS5-3.3#TR LT1761MPS5-3.3 LT1761MPS5-3.3#TR LT1761ES5-5 LT1761ES5-5#TR LT1761IS5-5 LT1761IS5-5#TR LT1761MPS5-5 LT1761MPS5-5#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...

Page 4

LT1761 Series ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Minimum Input Voltage (Notes 3, 11) I LOAD Regulated Output Voltage (Note 4) LT1761-1.2 LT1761-1.5 LT1761-1.8 LT1761-2 LT1761-2.5 LT1761-2.8 LT1761-3 LT1761-3.3 LT1761-5 ADJ Pin Voltage (Note ...

Page 5

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS Load Regulation LT1761-1.2 LT1761-1.5 LT1761-1.8 LT1761-2 LT1761-2.5 LT1761-2.8 LT1761-3 LT1761-3.3 LT1761-5 LT1761 (Note 3) Dropout Voltage I LOAD OUT(NOMINAL) LOAD (Notes 5, 6, ...

Page 6

LT1761 Series ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER CONDITIONS GND Pin Current I LOAD OUT(NOMINAL) LOAD (Notes LOAD I LOAD I LOAD Output Voltage Noise C OUT ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Typical Dropout Voltage 500 450 400 350 T = 125°C J 300 250 T = 25°C J 200 150 100 100 OUTPUT CURRENT (mA) 1761 ...

Page 8

LT1761 Series TYPICAL PERFORMANCE CHARACTERISTICS LT1761-2.8 Output Voltage 2. 1mA L 2.83 2.82 2.81 2.80 2.79 2.78 2.77 2.76 – –50 100 TEMPERATURE (°C) 1761 G52 LT1761-5 Output Voltage 5. 1mA L ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS LT1761-2.5 Quiescent Current 200 T = 25° ∞ 175 L 150 125 100 SHDN SHDN ...

Page 10

LT1761 Series TYPICAL PERFORMANCE CHARACTERISTICS LT1761-2 GND Pin Current 2. 25°C J 2.25 *FOR OUT 2. 20Ω 100mA* L 1.50 1. 40Ω 50mA* ...

Page 11

TYPICAL PERFORMANCE CHARACTERISTICS SHDN Pin Threshold (Off to On) 1.0 0 100mA 0.8 L 0.7 0 1mA L 0.5 0.4 0.3 0.2 0.1 0 – 100 –25 TEMPERATURE (°C) 1761 G27 ADJ ...

Page 12

LT1761 Series TYPICAL PERFORMANCE CHARACTERISTICS LT1761-5 Input Ripple Rejection 0.01μF BYP 1000pF BYP 100pF 40 BYP 100mA OUT(NOMINAL ...

Page 13

TYPICAL PERFORMANCE CHARACTERISTICS RMS Output Noise vs Load Current (10Hz to 100kHz) 160 C = 10μF OUT 140 BYP C = 0.01μF BYP LT1761-5 120 100 80 LT1761-BYP 60 40 LT1761-5 20 LT1761-BYP 0 0.01 0.1 1 ...

Page 14

LT1761 Series PIN FUNCTIONS IN (Pin 1): Input. Power is supplied to the device through the IN pin. A bypass capacitor is required on this pin if the device is more than six inches away from the main input fi ...

Page 15

APPLICATIONS INFORMATION The LT1761 series are 100mA low dropout regulators with micropower quiescent current and shutdown. The devices are capable of supplying 100mA at a dropout voltage of 300mV. Output voltage noise can be lowered to 20μV over a 10Hz ...

Page 16

LT1761 Series APPLICATIONS INFORMATION Output Capacitance and Transient Response The LT1761 regulators are designed to be stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most notably with small capaci- tors. A minimum ...

Page 17

APPLICATIONS INFORMATION Voltage and temperature coeffi cients are not the only sources of problems. Some ceramic capacitors have a piezoelectric response. A piezoelectric device generates voltage across its terminals due to mechanical stress, similar to the way a piezoelectric accelerometer ...

Page 18

LT1761 Series APPLICATIONS INFORMATION and a maximum ambient temperature of 50°C, what will the maximum junction temperature be? The power dissipated by the device will be equal to – OUT(MAX) IN(MAX) OUT GND where, ...

Page 19

APPLICATIONS INFORMATION In situations where the ADJ pin is connected to a resistor divider that would pull the ADJ pin above its 7V clamp volt- age if the output is pulled high, the ADJ pin input current must be limited ...

Page 20

LT1761 Series PACKAGE DESCRIPTION 0.62 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE ...

Page 21

... Added MP-grade Added Typical Application 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. LT1761 Series ...

Page 22

... Burst Mode www.linear.com ● Startup Time 100 10 1 0.1 10 100 1000 10000 C (pF) BYP 1761 TA02b Noise RMS Noise RMS (100kHz BW) RMS Noise RMS ® Operation, Monolithic, 100% Duty Cycle LT 0510 REV F • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005 1761sff ...

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