LT1964ES5-BYP Linear Technology Corporation, LT1964ES5-BYP Datasheet

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LT1964ES5-BYP

Manufacturer Part Number
LT1964ES5-BYP
Description
Manufacturer
Linear Technology Corporation
Datasheet

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FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Battery-Powered Instruments
Low Noise Regulator for Noise-Sensitive
Instrumentation
Negative Complement to LT1761 Family of
Positive LDOs
Low Profile (1mm) ThinSOT
Low Noise: 30 V
Low Quiescent Current: 30 A
Low Dropout Voltage: 340mV
Output Current: 200mA
Fixed Output Voltage: –5V
Adjustable Output from –1.22V to – 20V
Positive or Negative Shutdown Logic
3 A Quiescent Current in Shutdown
Stable with 1 F Output Capacitor
Stable with Aluminum, Tantalum, or Ceramic
Capacitors
Thermal Limiting
V
–5.4V
TO –20V
IN
–5V Low Noise Regulator
U
RMS
1 F
SHDN
IN
(10Hz to 100kHz)
LT1964-5
GND
BYP
OUT
TM
U
Package
30 V
0.01 F
–5V AT 200mA
RMS
1964 TA01a
NOISE
10 F
Micropower Regulator in ThinSOT
DESCRIPTIO
The LT
negative regulator. The device is capable of supplying
200mA of output current with a dropout voltage of 340mV.
Low quiescent current (30 A operating and 3 A shut-
down) makes the LT1964 an excellent choice for battery-
powered applications. Quiescent current is well controlled
in dropout.
Other features of the LT1964 include low output noise.
With the addition of an external 0.01 F bypass capacitor,
output noise is reduced to 30 V
bandwidth. The LT1964 is capable of operating with small
capacitors and is stable with output capacitors as low as
1 F. Small ceramic capacitors can be used without the
necessary addition of ESR as is common with other
regulators. Internal protection circuitry includes reverse
output protection, current limiting, and thermal limiting.
The device is available with a fixed output voltage of –5V
and as an adjustable device with a –1.22V reference
voltage. The LT1964 regulators are available in a low
profile (1mm) ThinSOT package.
ThinSOT is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
100 V/DIV
®
V
Low Dropout Negative
OUT
1964 is a micropower low noise, low dropout
10Hz to 100kHz Output Noise
200mA, Low Noise,
U
1ms/DIV
RMS
over a 10Hz to 100kHz
1964 TA01b
LT1964
30 V
RMS
1
1964f

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LT1964ES5-BYP Summary of contents

Page 1

... The device is available with a fixed output voltage of –5V and as an adjustable device with a –1.22V reference voltage. The LT1964 regulators are available in a low profile (1mm) ThinSOT package. , LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation ...

Page 2

... LT1964ES5-SD S5 PART MARKING GND 1 LTVX IN 2 BYP 3 ORDER PART S5 PACKAGE NUMBER 5-LEAD PLASTIC SOT- 150 C, JMAX LT1964ES5-BYP SEE THE APPLICATIONS INFORMATION SECTION S5 PART MARKING LTVY The denotes the specifications which apply over the full operating = –5.5V – 1mA IN LOAD – ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Dropout Voltage I = – 1mA LOAD – 1mA IN OUT(NOMINAL) LOAD (Notes – 10mA LOAD I = – 10mA ...

Page 4

LT1964 W U TYPICAL PERFOR A CE CHARACTERISTICS Typical Dropout Voltage 500 450 400 T = 125 C J 350 300 250 200 150 100 –40 –80 –120 –160 –200 OUTPUT CURRENT ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS LT1964-BYP, LT1964-SD GND Pin Current –3 *FOR V = –1.22V J SHDN IN OUT –2 6 –200mA* L –2.0 R ...

Page 6

LT1964 W U TYPICAL PERFOR A CE CHARACTERISTICS Input Ripple Rejection – OUT(NOMINAL) 58 0.5V RIPPLE 120Hz P –200mA –50 ...

Page 7

W U TYPICAL PERFOR A CE CHARACTERISTICS LT1964-5, 10Hz to 100kHz Output Noise 1000pF BYP 1ms/DIV OUT I = – 200mA LOAD LT1964-5, Transient Response BYP ...

Page 8

LT1964 CTIO S collector logic with a pull-up resistor. The pull-up resistor is required to supply the pull-up current of the open collector gate, normally several microamperes, and the SHDN pin current, typically 3 A ...

Page 9

U U APPLICATIO S I FOR ATIO GND V ADJ IN LT1964 IN OUT –1.22V – (I OUT ADJ –1.22V ADJ I = 30nA ADJ OUTPUT RANGE = –1.22V ...

Page 10

LT1964 U U APPLICATIO S I FOR ATIO 20 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE X5R –20 –40 –60 Y5V –80 –100 BIAS VOLTAGE (V) Figure 2. Ceramic Capacitor ...

Page 11

... 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 12

... Noise, ThinSOT Package Q RMS = Noise, MS8 Package Q RMS = Noise, S8 Package Q RMS Noise; DD and T5 Packages RMS = Noise, MS8 Package Q RMS Noise; DD, T5, S8 and ThinSOT RMS 1964f LT/TP 0502 2K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2001 ...

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