IC REG LDO 1.8V 1.1A 8-MSOP

 

LT1965EMS8E-1.8#PBF

Manufacturer Part NumberLT1965EMS8E-1.8#PBF
DescriptionIC REG LDO 1.8V 1.1A 8-MSOP
ManufacturerLinear Technology
LT1965EMS8E-1.8#PBF datasheets

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Specifications of LT1965EMS8E-1.8#PBF

Regulator TopologyPositive FixedVoltage - Output1.8V
Voltage - InputUp to 20VVoltage - Dropout (typical)0.31V @ 1.1A
Number Of Regulators1Current - Output1.1A
Current - Limit (min)1.2AOperating Temperature-40°C ~ 125°C
Mounting TypeSurface MountPackage / Case8-MSOP Exposed Pad, 8-HMSOP, 8-eMSOP
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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FEATURES
n
Output Current: 1.1A
n
Dropout Voltage: 310mV
n
Low Noise: 40μV
(10Hz to 100kHz)
RMS
n
500μA Quiescent Current (Adjustable Version)
n
Wide Input Voltage Range: 1.8V to 20V
n
No Protection Diodes Needed
n
Controlled Quiescent Current in Dropout
n
Adjustable Output from 1.20V to 19.5V
n
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
n
< 1μA Quiescent Current in Shutdown
n
Stable with 10μF Output Capacitor
n
Stable with Ceramic, Tantalum or Aluminum
Electrolytic Capacitors
n
Reverse Battery Protection
n
No Reverse Current
n
Current Limit with Foldback Protection
n
Thermal Limiting
n
5-Lead TO-220, DD-PAK, Thermally Enhanced 8-Lead
MSOP and 8-Lead 3mm × 3mm DFN Packages
APPLICATIONS
n
Logic Power Supplies
n
Post Regulator for Switching Supplies
n
Low Noise Instrumentation
TYPICAL APPLICATION
3.3V to 2.5V Regulator
IN
OUT
+
V
> 3V
IN
10μF*
TO 20V
LT1965-2.5
SHDN
SENSE
GND
1965 TA01
Low Dropout Linear Regulator
DESCRIPTION
®
The LT
1965 series are low noise, low dropout linear regu-
lators. The devices supply 1.1A of output current with a
310mV typical dropout voltage. Operating quiescent current
is 500μA for the adjustable version, reducing to <1μA in
shutdown. Quiescent current is well controlled; it does not
rise in dropout as with many other regulators. The LT1965
regulators have very low output noise which makes them
ideal for sensitive RF and DSP supply applications.
Output voltage ranges from 1.20V to 19.5V. The LT1965
regulators are stable with output capacitors as low as
10μF . Internal protection circuitry includes reverse battery
protection, current limiting with foldback, thermal limiting
and reverse current protection. The LT1965 series are
available in fi xed output voltages of 1.5V, 1.8V, 2.5V, 3.3V,
and as an adjustable device with a 1.20V reference voltage.
The package offerings include the 5-lead TO-220, 5-lead
DD-PAK as well as the thermally enhanced 8-lead MSOP
and low-profi le (0.75mm) 8-lead 3mm × 3mm DFN.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
400
350
2.5V
+
1.1A
300
10μF*
250
200
150
*CERAMIC, TANTALUM OR
ALUMINUM ELECTROLYTIC
100
50
0
LT1965 Series
1.1A, Low Noise,
Dropout Voltage
T
= 25°C
J
0
0.2
0.4
0.6
0.8
1
1.2
OUTPUT CURRENT (A)
1965 TA01b
1965fa
1

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LT1965EMS8E-1.8#PBF Summary of contents

  • Page 1

    ... The package offerings include the 5-lead TO-220, 5-lead DD-PAK as well as the thermally enhanced 8-lead MSOP and low-profi le (0.75mm) 8-lead 3mm × 3mm DFN. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 400 350 2 ...

  • Page 2

    LT1965 Series ABSOLUTE MAXIMUM RATINGS (Note 1) IN Pin Voltage .........................................................±22V OUT Pin Voltage ......................................................±22V Input to Output Differential Voltage (Note 2) ......... ±22V SENSE Pin Voltage ..................................................±22V ADJ Pin Voltage ........................................................±9V SHDN Pin Voltage ...................................................±22V PIN CONFIGURATION TOP VIEW ...

  • Page 3

    ... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT1965EMS8E#PBF LT1965EMS8E#TRPBF LT1965IMS8E#PBF LT1965IMS8E#TRPBF LT1965EMS8E-1.5#PBF LT1965EMS8E-1.5#TRPBF LTDKX LT1965IMS8E-1.5#PBF LT1965IMS8E-1.5#TRPBF LTDKX LT1965EMS8E-1.8#PBF LT1965EMS8E-1.8#TRPBF LTDKZ LT1965IMS8E-1.8#PBF LT1965IMS8E-1.8#TRPBF LTDKZ LT1965EMS8E-2.5#PBF LT1965EMS8E-2.5#TRPBF LTDMC LT1965IMS8E-2.5#PBF LT1965IMS8E-2.5#TRPBF LTDMC LT1965EMS8E-3.3#PBF LT1965EMS8E-3.3#TRPBF LTDMF LT1965IMS8E-3.3#PBF LT1965IMS8E-3.3#TRPBF LTDMF LT1965EQ#PBF LT1965EQ#TRPBF LT1965IQ#PBF LT1965IQ#TRPBF LT1965EQ-1.5#PBF LT1965EQ-1 ...

  • Page 4

    LT1965 Series ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Minimum Input Voltage (Notes 4, 12) Regulated Output Voltage (Note 5) ADJ Pin Voltage (Notes 4, 5) Line Regulation Load Regulation Dropout Voltage ...

  • Page 5

    ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Current Limit Input Reverse Leakage Current Reverse Output Current (Note 11) Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure ...

  • Page 6

    LT1965 Series TYPICAL PERFORMANCE CHARACTERISTICS Typical Dropout Voltage 500 450 400 T = 125°C 350 J 300 250 200 T = 25°C J 150 100 0.2 0.6 0.8 1 0.4 OUTPUT CURRENT (A) 1965 G01 Quiescent Current ...

  • Page 7

    TYPICAL PERFORMANCE CHARACTERISTICS LT1965-1.5 Quiescent Current 25° ∞ SHDN SHDN INPUT ...

  • Page 8

    LT1965 Series TYPICAL PERFORMANCE CHARACTERISTICS LT1965-2.5 GND Pin Current (Light Load 25° SHDN 10 *FOR V = 2.5V OUT 250Ω 10mA 2.5k, ...

  • Page 9

    TYPICAL PERFORMANCE CHARACTERISTICS SHDN Pin Input Current SHDN PIN VOLTAGE (V) 1965 G11 Current Limit vs V – OUT 2.5 ΔV ...

  • Page 10

    LT1965 Series TYPICAL PERFORMANCE CHARACTERISTICS Ripple Rejection vs Temperature 100 0.75A 0.5 IN OUT(NOMINAL) P-P RIPPLE 120Hz 60 –50 – 100 ...

  • Page 11

    PIN FUNCTIONS (DFN/MSOP/DD-PAK/TO-220) OUT (Pins 4): Output. This pin supplies power to the load. Use a minimum output capacitor of 10μF to prevent oscillations. Large load transient applica- tions require larger output ...

  • Page 12

    ... The ADJ pin bias current, 1.3μA at 25°C, fl ows through R2 into the ADJ pin. Use the formula in Figure 2 to calcu- late output voltage. Linear Technology recommends that R1’s value be less than 12.1k to minimize output voltage errors due to the ADJ pin bias current. In shutdown, the output turns off and the divider current is zero ...

  • Page 13

    APPLICATIONS INFORMATION capacitor values below appropriate levels. Capacitor DC bias characteristics tend to improve as component case size increases, but expected capacitance at operating voltages should be verifi ed. Voltage and temperature coeffi cients are not the only sources of ...

  • Page 14

    LT1965 Series APPLICATIONS INFORMATION recover. Other regulators, such as the LT1083/LT1084/ LT1085 family, also exhibit this phenomenon not unique to the LT1965. The problem occurs with a heavy output load when the input voltage is high and ...

  • Page 15

    APPLICATIONS INFORMATION The following tables list thermal resistance for several different board sizes and copper areas. All measurements were taken in still air on 1/16" FR-4 board with one ounce copper. Table 1. Measured Thermal Resistance for DFN Package Copper ...

  • Page 16

    LT1965 Series APPLICATIONS INFORMATION Protection Features The LT1965 regulators incorporate several protection features that makes them ideal for use in battery-powered circuits. In addition to the normal protection features associated with monolithic regulators, such as current limiting and thermal limiting, ...

  • Page 17

    TYPICAL APPLICATIONS + V > 3.7V IN Paralleling of Regulators for Higher Output Current R1 0.01Ω IN OUT C1 LT1965-3.3 100μF SHDN SENSE GND R2 0.01Ω IN OUT LT1965 SHDN SHDN ADJ GND R3 R4 2.2k 2. ...

  • Page 18

    LT1965 Series PACKAGE DESCRIPTION 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF ...

  • Page 19

    ... BSC (1.70) 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. Q Package 5-Lead Plastic DD Pak (Reference LTC DWG # 05-08-1461) .390 – ...

  • Page 20

    ... LT3028 Dual, 100mA/500mA, Low Noise Micropower, LDO with Independent Inputs LT3080/ 1.1A Parallelable, Low Noise, Low Dropout LT3080-1 Linear Regulator ThinSOT is a trademark of Linear Technology Corporation 20 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● Adjustable Current Source R5, 0.01Ω ...

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