MICROCHIP TC1070, TC1071, TC1187 Technical data

TC1070/TC1071/TC1187

TC1070 TC1071 TC1187

V

OUT

GND

C1 1 µF

+

V

IN

V

IN

V

OUT

1

5

2

4

3

SHDN

Shutdown Control

(from Power Control Logic)

ADJ

R1

R2

[ ]

V

OUT

= V

REF

x +1

R1 R2

ADJ

SHDN

5

5-Pin SOT-23

TC1070 TC1071 TC1187

13

4

2

V

IN

V

OUT

GND

50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown

Features:

• 50 µA Ground Current for Longer Battery Life

• Adjustable Output Voltage

• Very Low Dropout Voltage

• Choice of 50 mA (TC1070), 100 mA (TC1071) and 150 mA (TC1187) Output

• Power-Saving Shutdown Mode

• Over Current and Over Temperature Protection

• Space-Saving 5-Pin SOT-23 Package

• Pin Compatible with Bipolar Regulators

Applications:

• Battery Operated Systems

• Portable Computers

• Medical Instruments

• Instrumentation

• Cellular/GSM/PHS Phones

• Linear Post-Regulators for SMPS

• Pagers

Typical Application

General Description:

The TC1070, TC1071 and TC1187 are adjustable LDOs designed to supersede a variety of older (bipolar) voltage regulators. Total supply current is typically 50 μA at full load (20 to 60 times lower than in bipolar regulators).

The devices’ key features include ultra low-noise operation, very low dropout voltage – typically 85 mV (TC1070); 180 mV (TC1071); and 270 mV (TC1187) at full load, and fast response to step changes in load. Supply current is reduced to 0.5 μA (maximum) when the shutdown input is low. The devices incorporate both over-temperature and over-current protection. Output voltage is programmed with a simple resistor divider from V

to ADJ to GND.

OUT

The TC1070, TC1071 and TC1187 are stable with an output capacitor of only 1 μF and have a maximum output current of 50 mA, 100 mA and 150 mA, respectively. For higher output versions, please see the TC1174 (I

= 300 mA) data sheet.

OUT

Package Type

TC1070/TC1071/TC1187

TC V

OUT

= (V

OUTMAX

– V

OUTMIN

) x 10

6

V

OUT

x ΔT

1.0 ELECTRICAL CHARACTERISTICS

*Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions

Absolute Maximum Ratings*

Input Voltage .........................................................6.5V

Output Voltage...........................(-0.3V) to (V

Power Dissipation................Internally Limited (Note 5)

Maximum Voltage on Any Pin ........V

IN

Operating Temperature Range...... -40°C < T

+ 0.3V)

IN

+0.3V to -0.3V

< 125°C

J

above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

Storage Temperature..........................-65°C to +150°C

ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VIN = V

type specifications apply for junction temperatures of -40°C to +125°C.

Symbol Parameter Min Typ Max Units Test Conditions

V

IN

I

OUTMAX

V

OUT

V

REF

/ΔTV

ΔV

REF

/ΔV

ΔV

OUT

ΔV

OUT/VOUT

V

IN-VOUT

Input Operating Voltage 2.7 — 6.0 V Note 6 Maximum Output Current 50

Adjustable Output Voltage Range

Reference Voltage 1.165 1.20 1.235 V

Temperature Coefficient — 40 — ppm/°C Note 1

REF

Line Regulation — 0.05 0.35 %(VR + 1V) ≤ VIN ≤ 6V

IN

Load Regulation TC1070; TC1071

Dropout Voltage

TC1071; TC1187

I

IN

I

INSD

Supply Current — 50 80 μASHDN = VIH, IL = 0 Shutdown Supply Current — 0.05 0.5 μASHDN = 0V

PSRR Power Supply Rejection Ratio — 64 — dB F I

OUTSC

ΔV T

SD

ΔT

SD

OUT

/ΔP

Output Short Circuit Current — 300 450 mA V Thermal Regulation — 0.04 — V/W Note 4

D

Thermal Shutdown Die Temperature — 160 — °C Thermal Shutdown Hysteresis — 10 — °C

eN Output Noise — 260 — nV/√Hz

SHDN Input

V

IH

SHDN Input High Threshold 45 ——%VINVIN = 2.5V to 6.5V

Note 1:

+ 1V, IL = 0.1 mA, CL = 3.3 μF, SHDN > VIH, TA = 25°C, unless otherwise noted. Boldface

OUT

mA TC1070

TC1071 TC1187

%IL = 0.1 mA to I

IL = 0.1 mA to I

TC1187

100 150

V

REF

— —

— — —

—5.5V

0.5

2 3

(Note 2)

mV I

= 0.1 mA

L

I

= 20 mA

L

I

= 50 mA

L

I

= 100 mA

L

I

= 150 mA (Note 3)

L

≤ 1 kHz

RE

= 0V

OUT

IL = I

OUTMAX

TC1187

— — — — —

2 65 85

180 270

— —

120 250 400

OUTMAX OUTMAX

2: Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range

from 0.1 mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal regulation specification.

3: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value. 4: Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or

line regulation effects. Specifications are for a current pulse equal to I

5: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the

thermal resistance from junction-to-air (i.e., T thermal shutdown. Please see Section 5.0 “Thermal Considerations” for more details.

6: The minimum V

has to justify the conditions: VIN ≥ VR + V

IN

, TJ, θJA). Exceeding the maximum allowable power dissipation causes the device to initiate

A

DROPOUT

at VIN = 6V for T = 10 ms.

LMAX

and VIN ≥ 2.7V for IL = 0.1 mA to I

OUTMAX

.

TC1070/TC1071/TC1187

TC V

OUT

= (V

OUTMAX

– V

OUTMIN

) x 10

6

V

OUT

x ΔT

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: VIN = V

+ 1V, IL = 0.1 mA, CL = 3.3 μF, SHDN > VIH, TA = 25°C, unless otherwise noted. Boldface

OUT

type specifications apply for junction temperatures of -40°C to +125°C.

Symbol Parameter Min Typ Max Units Test Conditions

V

IL

SHDN Input Low Threshold — — 15 %V

VIN = 2.5V to 6.5V

IN

ADJ Input

I

ADJ

Adjust Input Leakage Current — 50 — pA

Note 1:

2: Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range

from 0.1 mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal regulation specification.

3: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value. 4: Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or

line regulation effects. Specifications are for a current pulse equal to I

5: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the

thermal resistance from junction-to-air (i.e., T thermal shutdown. Please see Section 5.0 “Thermal Considerations” for more details.

6: The minimum V

has to justify the conditions: VIN ≥ VR + V

IN

, TJ, θJA). Exceeding the maximum allowable power dissipation causes the device to initiate

A

DROPOUT

at VIN = 6V for T = 10 ms.

LMAX

and VIN ≥ 2.7V for IL = 0.1 mA to I

OUTMAX

.

TC1070/TC1071/TC1187

2.0 TYPICAL CHARACTERISTICS

Note: Unless otherwise specified, all parts are measured at temperature = +25°C)

Note: The graphs and tables provided following this note are a statistical summary based on a limited number of

samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

0.020

0.018

0.016

0.014

0.012

0.010

0.008

0.006

0.004

DROPOUT VOLTAGE (V)

0.002

0.000

0.020

0.018

Dropout Voltage vs. Temperature

I

= 10mA

LOAD

C

= 1μF

IN

C

= 1μF

OUT

-40 -20 0 20 50 70 125

Dropout Voltage vs. Temperature

I

= 10mA

LOAD

0.016

0.014

0.012

0.010

0.008

0.006

0.004

DROPOUT VOLTAGE (V)

C

= 1μF

0.002

0.000

IN

= 1μF

C

OUT

-40 -20 0 20 50 70 125

TEMPERATURE (°C)

(V

= 3.3V)

OUT

0.100

0.090

Dropout Voltage vs. Temperature

I

= 50mA

LOAD

(V

= 3.3V)

OUT

0.080

0.070

0.060

0.050

0.040

0.030

0.020

DROPOUT VOLTAGE (V)

C

= 1μF

0.010

0.000

IN

C

= 1μF

OUT

-40 -20 0 20 50 70 125

TEMPERATURE (°C)

(V

= 3.3V)

OUT

0.300

0.250

0.200

0.150

0.100

0.050

DROPOUT VOLTAGE (V)

0.000

Dropout Voltage vs. Temperature

I

= 150mA

LOAD

C

= 1μF

IN

= 1μF

C

OUT

-40 -20 0 20 50 70 125

TEMPERATURE (°C)

(V

= 3.3V)

OUT

90

80

70

A)

μ

60

50

40

30

GND CURRENT (

20

10

0

Ground Current vs. V

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5

(V

= 3.3V)

IN

OUT

V

(V)

IN

I

LOAD

C

IN

C

OUT

= 10mA

= 1μF

90

80

70

A)

μ

60

50

40

30

GND CURRENT (

20

10

0

Ground Current vs. V

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5

(V

= 3.3V)

IN

OUT

I

= 100mA

LOAD

C

= 1μF

IN

C

= 1μF

OUT

(V)

V

IN

TC1070/TC1071/TC1187

TYPICAL CHARACTERISTICS (CONTINUED)

Note: Unless otherwise specified, all parts are measured at temperature = +25°C)

80

70

Ground Current vs. VIN (V

I

= 150mA

LOAD

60

50

40

30

20

GND CURRENT (μA)

10

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5

(V)

V

IN

OUT

= 3.3V)

C C

IN OUT

= 1μF

3.5

I

= 0

LOAD

3

2.5

2

(V)

OUT

1.5

V

1

0.5

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7

V

vs.

V

(V

OUT

= 3.3V)

IN

OUT

C

= 1μF

IN

C

= 1μF

OUT

V

(V)

IN

V

vs.

V

(V

3.5

3.0

I

LOAD

OUT

= 100mA

= 3.3V)

IN

OUT

2.5

2.0

(V)

OUT

1.5

V

1.0

0.5

0.0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7

Output Voltage vs. Temperature (V

I

= 150mA

LOAD

C

= 1μF

IN

= 1μF

C

OUT

= 4.3V

V

IN

-40 -20 -10 0 20 40 85 125

(V)

V

OUT

3.290

3.288

3.286

3.284

3.282

3.280

3.278

3.276

3.274

VIN (V)

TEMPERATURE (°C)

OUT

C

IN

C

OUT

= 1μF

= 3.3V)

3.320

3.315

Output Voltage vs. Temperature (V

I

= 10mA

LOAD

3.310

3.305

3.300

(V)

3.295

OUT

V

3.290

3.285

C

= 1μF

IN

= 1μF

C V

OUT

= 4.3V

IN

3.280

3.275

-40 -20 -10 0 20 40 85 125

TEMPERATURE (°C)

OUT

= 3.3V)

TC1070/TC1071/TC1187

4.985

4.990

4.995

5.000

5.005

5.010

5.015

5.020

5.025

-40 -20 -10 0 20 40 85 125

I

LOAD

= 10mA

V

IN

= 6V

C

IN

= 1μF

C

OUT

= 1μF

TEMPERATURE (°C)

Output Voltage vs. Temperature

(V

OUT

= 5V)

V

OUT

(V)

0

10

20

30

40

50

60

70

-40 -20 -10 0 20 40 85 125

GND CURRENT (

μ

A)

I

LOAD

= 10mA

V

IN

= 6V

C

IN

= 1μF

C

OUT

= 1μF

TEMPERATURE (°C)

Temperature

vs. Quiescent Current

(V

OUT

= 5V)

10.0

1.0

0.1

0.0

0.01K

0.1K

1K 10K 100K

1000K

FREQUENCY (Hz)

Output Noise vs. Frequency

NOISE (μV/√Hz)

R

LOAD

= 50Ω

C

OUT

= 1μF

C

IN

= 1μF

1000

100

10

1

0.1

0.01 0

10

203040

50 60 70 80 90 100

LOAD CURRENT (mA)

Stability Region vs. Load Current

C

OUT

ESR

(Ω)

C

OUT

= 1μF

to 10μF

Stable Region

S

n

-30

-35

-40

-45

-50

-60

-55

-65

-70

-75

-80

0.01K

0.1K

1K 10K

100K

1000K

FREQUENCY (Hz)

Power Supply Rejection Ratio

PSRR (dB)

I

OUT =

10mA

V

IN

DC

= 4V

V

IN

AC

= 100mV

p-p

V

OUT

= 3V

C

IN

= 0

C

OUT

= 1μF

TYPICAL CHARACTERISTICS (CONTINUED)

Note: Unless otherwise specified, all parts are measured at temperature = +25°C)

Output Voltage vs. Temperature

I

= 150mA

LOAD

V

= 6V

IN

C

= 1μF

IN

C

= 1μF

OUT

-40 -20 -10 0 20 40 85 12 5

(V)

OUT

V

4.994

4.992

4.990

4.988

4.986

4.984

4.982

4.980

4.978

4.976

4.974

TEMPERATURE (°C)

(V

= 5V)

OUT

table Regio

Temperature vs. Quiescent Current (V

80

I

= 150mA

LOAD

70

60

50

40

30

20

V

= 6V

IN

GND CURRENT (μA)

10

= 1μF

C

IN

= 1μF

C

OUT

0

-40 -20 -10 0 20 40 85 12 5

TEMPERATURE (°C)

OUT

= 5V)