Micrel MIC5219-2.5BM5, MIC5219-2.6BM5, MIC5219-2.7BM5, MIC5219-2.85BM5, MIC5219-2.8BM5 Schematic [ru]

Micrel, Inc. MIC5219

1

2

3

4

8

7

6

5

MIC5219-5.0BMM

2.2µF

tantalum

V

OUT

5V

VIN6V

ENABLE

SHUTDOWN

470pF

15

2

3

4

2.2µF

tantalum

470pF

V

OUT

3.3V

MIC5219-3.3BM5

VIN4V

ENABLE

SHUTDOWN

ENABLE

SHUTDOWN

MIC5219-x.xYML

1

EN

6

C

BYP

(optional)

V

IN

V

OUT

C

OUT

5

4

2

3

ENABLE

SHUTDOWN

MIC5219YMT

1

EN

6

470pF

V

IN

V

OUT

2.2µF

5

4

2

3

R1

R2

+

MIC5219

500mA-Peak Output LDO Regulator

General Description

The MIC5219 is an efcient linear voltage regulator with high
peak output current capability, very-low-dropout voltage, and
better than 1% output voltage accuracy. Dropout is typically
10mV at light loads and less than 500mV at full load.

The MIC5219 is designed to provide a peak output current for
start-up conditions where higher inrush current is demanded.
It features a 500mA peak output rating. Continuous output
current is limited only by package and layout.

The MIC5219 can be enabled or shut down by a CMOS or
TTL compatible signal. When disabled, power consumption
drops nearly to zero. Dropout ground current is minimized to
help prolong battery life. Other key features include reversed­battery protection, current limiting, overtemperature shutdown,
and low noise performance with an ultra-low-noise option.

The MIC5219 is available in adjustable or xed output volt­ages in the space-saving 6-pin (2mm × 2mm) MLF®, 6-pin
(2mm × 2mm) Thin MLF® SOT-23-5 and MM8® 8-pin power
MSOP packages. For higher power requirements see the
MIC5209 or MIC5237.

All support documentation can be found on Micrel’s web site
at www.micrel.com.

Features

• 500mA output current capability

SOT-23-5 package - 500mA peak
2mm×2mm MLF® package - 500mA continuous
2mm×2mm Thin MLF® package - 500mA

continuous

MSOP-8 package - 500mA continuous

• Low 500mV maximum dropout voltage at full load

• Extremely tight load and line regulation

• Tiny SOT-23-5 and MM8™ power MSOP-8 package

• Ultra-low-noise output

• Low temperature coefcient

• Current and thermal limiting

• Reversed-battery protection

• CMOS/TTL-compatible enable/shutdown control

• Near-zero shutdown current

Applications

• Laptop, notebook, and palmtop computers

• Cellular telephones and battery-powered equipment

• Consumer and personal electronics

• PC Card VCC and VPP regulation and switching

• SMPS post-regulator/DC-to-DC modules

• High-efciency linear power supplies

Typical Applications

5V Ultra-Low-Noise Regulator

Ultra-Low-Noise Regulator (Fixed)

MM8 is a registered trademark of Micrel, Inc.

MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc..

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com

June 2009 1 M0371-061809

3.3V Ultra-Low-Noise Regulator

Ultra-Low-Noise Regulator (Adjustable)

Micrel, Inc. MIC5219

1

2

3

4

8

7

6

5

GND

GND

GND

GND

EN

IN

OUT

BYP

1

2

3

4

8

7

6

5

GND

GND

GND

GND

EN

IN

OUT

BYP

IN

OUTBYP

EN

LGxx

13

4 5

2

GND

Part
Identification

IN

OUTADJ

EN

LGAA

13

45

2

GND

1EN

GND

IN

6 BYP

NC

OUT

5

4

2

3

1EN

GND

IN

6 NC

ADJ

OUT

5

4

2

3

Ordering Information

Part Number Marking

Standard Pb-Free Standard Pb-Free* Volts Temp. Range Package

MIC5219-2.5BMM MIC5219-2.5YMM — — 2.5V –40°C to +125°C MSOP-8

MIC5219-2.85BMM MIC5219-2.85YMM — — 2.85V –40°C to +125°C MSOP-8

MIC5219-3.0BMM MIC5219-3.0YMM — — 3.0V –40°C to +125°C MSOP-8

MIC5219-3.3BMM MIC5219-3.3YMM — — 3.3V –40°C to +125°C MSOP-8

MIC5219-3.6BMM MIC5219-3.6YMM — — 3.6V –40°C to +125°C MSOP-8

MIC5219-5.0BMM MIC5219-5.0YMM — — 5.0V –40°C to +125°C MSOP-8

MIC5219BMM MIC5219YMM — — Adj. –40°C to +125°C MSOP-8

MIC5219-2.5BM5 MIC5219-2.5YM5 LG25 LG25 2.5V –40°C to +125°C SOT-23-5

MIC5219-2.6BM5 MIC5219-2.6YM5 LG26 LG26 2.6V –40°C to +125°C SOT-23-5

MIC5219-2.7BM5 MIC5219-2.7YM5 LG27 LG27 2.7V –40°C to +125°C SOT-23-5

MIC5219-2.8BM5 MIC5219-2.8YM5 LG28 LG28 2.8V –40°C to +125°C SOT-23-5
MIC5219-2.8BML MIC5219-2.8YML G28 G28 2.8V –40°C to +125°C 6-Pin 2×2 MLF

MIC5219-2.85BM5 MIC5219-2.85YM5 LG2J LG2J 2.85V –40°C to +125°C SOT-23-5

MIC5219-2.9BM5 MIC5219-2.9YM5 LG29 LG29 2.9V –40°C to +125°C SOT-23-5

MIC5219-3.1BM5 MIC5219-3.1YM5 LG31 LG31 3.1V –40°C to +125°C SOT-23-5

MIC5219-3.0BM5 MIC5219-3.0YM5 LG30 LG30 3.0V –40°C to +125°C SOT-23-5
MIC5219-3.0BML MIC5219-3.0YML G30 G30 3.0V –40°C to +125°C 6-Pin 2×2 MLF

MIC5219-3.3BM5 MIC5219-3.3YM5 LG33 LG33 3.3V –40°C to +125°C SOT-23-5
MIC5219-3.3BML MIC5219-3.3YML G33 G33 3.3V –40°C to +125°C 6-Pin 2×2 MLF

MIC5219-3.6BM5 MIC5219-3.6YM5 LG36 LG36 3.6V –40°C to +125°C SOT-23-5

MIC5219-5.0BM5 MIC5219-5.0YM5 LG50 LG50 5.0V –40°C to +125°C SOT-23-5

MIC5219BM5 MIC5219YM5 LGAA LGAA Adj. –40°C to +125°C SOT-23-5

MIC5219YMT GAA Adj. –40°C to +125°C 6-Pin 2x2 Thin MLF

MIC5219-5.0YMT G50 5.0V –40°C to +125°C 6-Pin 2x2 Thin MLF

Other voltages available. Consult Micrel for details.
* Over/underbar may not be to scale. ** Pin 1 identier = ▲.

®

®

®

®**

®**

Pin Conguration

MIC5219-x.xBMM / MM8® / MSOP-8

Fixed Voltages

(Top View)

June 2009 2 M0371-061809

MIC5219YMM / MIC5219BMM

Adjustable Voltage

MM8® MSOP-8

(Top View)

6-Pin 2mm × 2mm Thin MLF® (MT)

MIC5219-x.xBML

6-Pin 2mm × 2mm MLF® (ML)

(Top View)

MIC5219YMT

(Top View)

MIC5219-x.xBM5 / SOT-23-5

Fixed Voltages

(Top View)

MIC5219BM5 / SOT-23-5

Adjustable Voltage

(Top View)

Micrel, Inc. MIC5219

Pin Description

Pin No. Pin No. Pin No. Pin Name Pin Function
MLF-6 MSOP-8 SOT-23-5
TMLF-6

3 2 1 IN Supply Input.

2 5–8 2 GND Ground: MSOP-8 pins 5 through 8 are internally connected.

4 3 5 OUT Regulator Output.

1 1 3 EN Enable (Input): CMOS compatible control input. Logic high = enable; logic
low or open = shutdown.

6 4 (xed) 4 (xed) BYP Reference Bypass: Connect external 470pF capacitor to GND to reduce
output noise. May be left open.

5(NC) 4 (adj.) 4 (adj.) ADJ Adjust (Input): Feedback input. Connect to resistive voltage-divider network.

EP — — GND Ground: Internally connected to the exposed pad. Connect externally to

GND pin.

June 2009 3 M0371-061809

Micrel, Inc. MIC5219

nV/ Hz

nV/ Hz

Absolute Maximum Ratings

(1)

Supply Input Voltage (VIN) ..............................–20V to +20V

Power Dissipation (PD) ............................. Internally Limited

Junction Temperature (TJ) ........................ –40°C to +125°C

Storage Temperature (TS) ........................ –65°C to +150°C

Operating Ratings

Supply Input Voltage (VIN) ............................ +2.5V to +12V

Enable Input Voltage (VEN)....................................0V to V

Junction Temperature (TJ) ........................ –40°C to +125°C

Package Thermal Resistance ........................... see Table 1

(2)

Lead Temperature (Soldering, 5 sec.) ....................... 260°C

IN

Electrical Characteristics

VIN = V

+ 1.0V; C

OUT

= 4.7µF, I

OUT

(3)

= 100µA; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.

OUT

Symbol Parameter Conditions Min Typical Max Units

Output Voltage Accuracy variation from nominal V

V

OUT

–1 1 %

OUT

–2 2 %

/ΔT Output Voltage Note 4 40

ΔV

OUT

ppm/°C
Temperature Coefcient

ΔV

OUT/VOUT

Line Regulation VIN = V

+ 1V to 12V 0.009 0.05 %/V

OUT

0.1

ΔV

OUT/VOUT

Load Regulation I

= 100µA to 500mA, Note 5 0.05 0.5 %

OUT

0.7

– V

V

IN

OUT

Dropout Voltage

(6)

I

= 100µA 10 60 mV

OUT

80

I

= 50mA 115 175 mV

OUT

250

I

= 150mA 175 300 mV

OUT

400

I

= 500mA 350 500 mV

OUT

600

Ground Pin Current

I

GND

(7, 8)

V

≥ 3.0V, I

EN

= 100µA 80 130 µA

OUT

170

V

≥ 3.0V, I

EN

= 50mA 350 650 µA

OUT

900

V

≥ 3.0V, I

EN

= 150mA 1.8 2.5 mA

OUT

3.0

V

≥ 3.0V, I

EN

= 500mA 12 20 mA

OUT

25

(8)

Ground Pin Quiescent Current

V

VEN ≤ 0.4V 0.05 3 µA

≤ 0.18V 0.10 8 µA

EN

PSRR Ripple Rejection f = 120Hz 75 dB

Current Limit V

I

LIMIT

/ΔPD Thermal Regulation Note 9 0.05 %/W

ΔV

OUT

Output Noise

e

no

(10)

I

I

= 0V 700 1000 mA

OUT

= 50mA, C

OUT

= 50mA, C

OUT

= 2.2µF, C

OUT

= 2.2µF, C

OUT

= 0 500

BYP

= 470pF 300

BYP

ENABLE Input

Enable Input Logic-Low Voltage VEN = logic low (regulator shutdown) 0.4 V

V

ENL

0.18

V

Enable Input Current V

I

ENL

V

V

I

ENH

= logic high (regulator enabled) 2.0 V

EN

≤ 0.4V 0.01 –1 µA

ENL

≤ 0.18V 0.01 –2 µA

ENL

≥ 2.0V 2 5 20 µA

ENH

25

June 2009 4 M0371-061809

Micrel, Inc. MIC5219

Notes:

1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specications do not apply when operating
the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max),
the junction-to-ambient thermal resistance, θ
temperature is calculated using: PD(max) = (TJ(max) – TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in excessive die
temperature, and the regulator will go into thermal shutdown. See Table 1 and the “Thermal Considerations” section for details.

2. The device is not guaranteed to function outside its operating rating.

3. Specication for packaged product only.

4. Output voltage temperature coefcient is dened as the worst case voltage change divided by the total temperature range.

5. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range
from 100µA to 500mA. Changes in output voltage due to heating effects are covered by the thermal regulation specication.

6. Dropout voltage is dened as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differen­tial.

7. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of the load
current plus the ground pin current.

is the voltage externally applied to devices with the EN (enable) input pin.

8. V

EN

9. Thermal regulation is dened as the change in output voltage at a time “t” after a change in power dissipation is applied, excluding load or line regu­lation effects. Specications are for a 500mA load pulse at V

10. C

is an optional, external bypass capacitor connected to devices with a BYP (bypass) or ADJ (adjust) pin.

BYP

, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient

JA

= 12V for t = 10ms.

IN

June 2009 5 M0371-061809