Micrel MIC2210 User Manual

MIC2210 Micrel

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MIC2210

Dual µCap LDO with Open-Drain Driver

REV. 11/04

General Description

The MIC2210 is a dual µCap low dropout regulator with an
open-drain driver and power-on reset circuit. The first regulator
is capable of sourcing 150mA, while the second regulator can
source up to 300mA and includes a power-on reset function.
The open-drain output is capable of sinking 150mA for LED
backlighting applications.

Ideal for battery operated applications, the MIC2210 offers 1%
accuracy, extremely low dropout voltage (80mV @ 100mA),
and extremely low ground current, only 48µA total. Equipped
with a TTL logic compatible enable pin*, the MIC2210 can
be put into a zero-off-mode current state, drawing no current
when disabled.

The MIC2210 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.

The MIC2210 is available in fixed output voltages in the
10-pin 3mm × 3mm MLF™ leadless package and is also
available with adjustable output voltages in the 4mm × 4mm
16-pin MLF™ package.

* For each output.

Features

• Input voltage range: 2.25V to 5.5V

• Stable with ceramic output capacitor

• 2 LDO outputs

• Output 1 - 150mA output current

• Output 2 - 300mA output current

• 1 Open-drain driver

• Low dropout voltage of 80mV @ 100mA

• Ultra-low quiescent current of 48µA

• High output accuracy:

• +1.0% initial accuracy

• +2.0% over temperature

• Thermal shutdown protection

• Current limit protection

• Tiny 10-pin 3mm × 3mm MLF™ package

Applications

• Cellular/PCS phones

• Wireless modems

• PDAs

Typical Application

MIC2210-xxBML

VIN

VOUT1

LED x10
Keyboard
Backlight

Audio Amp

EN1

VOUT2

Baseband IC

EN2

CBYP

C

BYP

SW

GND

ERR

DRV

1 F 1 F

MIC2210 Typical Cellphone Application

MicroLeadFrame and MLF are 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

November 2004 1 MIC2210

MIC2210 Micrel

Ordering Information

Full Part NUmber Manufacturing

Part Number

MIC2210-3.0/3.3BML MIC2210-PSBML 3.0V/3.3V -40°C to +125°C 10-Pin 3x3 MLF

MIC2210-1.8/3.3BML MIC2210-GSBML 1.8V/3.3V -40°C to +125°C 10-Pin 3x3 MLF

MIC2210-2.8/1.6YML MIC2210-MWYML X 2.8V/1.6V -40°C to +125°C 10-Pin 3x3 MLF

MIC2210-3.0/3.3YML MIC2210-PSYML X 3.0V/3.3V -40°C to +125°C 10-Pin 3x3 MLF

MIC2210-3.3/3.3YML MIC2210-SSYML X 3.3V/3.3V -40°C to +125°C 10-Pin 3x3 MLF

* For other output voltage options, contact Micrel marketing.

Voltage Code

Adj. A

1.5 F

1.6 W

1.8 G

1.85 D

1.9 Y

2.0 H

2.1 E

2.5 J

2.6 K

2.7 L

2.8 M

2.850 N

2.9 O

3.0 P

3.1 Q

3.2 R

3.3 S

3.4 T

3.5 U

3.6 V

Table 1. Voltage Codes

Pb-FREE Voltage*

(Vo1/Vo2)

Junction Temp. Range Package

TM

TM

TM

TM

TM

MIC2210 2 November 2004

MIC2210 Micrel

1VIN

EN1

EN2

BYP

SW

10 VOUT1

VOUT2

ERR

DRV

GND

9

8

7

6

2

3

4

5

Pin Configuration

10-Pin 3mm × 3mm MLF™ (ML)

(Top View)

Pin Description

Pin Number Pin Name Pin Function
MLF-10 (3x3)

1 VIN Supply Input: (VIN1 and VIN2 are internally tied together.)

2 EN1 Enable Input to Regulator 1: Enables regulator 1 output. Active high

input. High = on, low = off. Do not leave floating.

3 EN2 Enable Input to Regulator 2: Enables regulator 2 output. Active high

input. High = on, low = off. Do not leave floating.

4 CBYP Reference Bypass: Connect external 0.01µF to GND to reduce output

noise. May be left open.

5 SW Active high signal drives open-drain N-channel MOSFET.

6 GND Ground: Connect externally to Exposed Pad.

7 DRV Open-Drain Output: Capable of sinking 150mA.

8 ERR Error Flag Output: Open-drain output. Active low indicates an output

undervoltage condition on regulator 2.

9 VOUT2 Output of Regulator 2: 300mA output current

10 VOUT1 Output of Regulator 1: 150mA output current

EP GND Ground: Internally connected to the Exposed Pad. Connect externally

to pin 6.

November 2004 3 MIC2210

MIC2210 Micrel

Absolute Maximum Rating (Note 1)

Supply Input Voltage (VIN) ......................................0V to 7V

Enable Input Voltage (V

Power Dissipation (PD) ................ Internally Limited, Note 3

Junction Temperature ...............................

Storage Temperature (T

Open-Drain Output (DRV) ........................................

Lead Temperature (soldering, 5 sec.) ........................

) ....................................0V to 7V

EN

–40°C to +125°C

) .......................... –65°C to 150°C

S

250mA

260°C

Operating Ratings (Note 2)

Supply Input Voltage (VIN) ..............................2.25V to 5.5V

Enable Input Voltage (V
Junction Temperature (T
Package Thermal Resistance

MLF™-10 (θJA) .................................................... 60°C/W

) ...................................0V to Vin

EN

) ........................ –40°C to +125°C

J

Electrical Characteristics (Note 4)

VIN = V
–40°C ≤ T

Parameter Conditions Min Typ Max Units

Output Voltage Accuracy Variation from nominal V
–2.0 +2.0 %

Output Voltage Temp.
Coefficient 40 ppm/C

Line Regulation; Note 5 VIN = V

Load Regulation I

I

Dropout Voltage;

I

Ground Pin Current I

I

Ground Pin Current
in Shutdown V

Ripple Rejection f = 1kHz; C

f = 20kHz; C

Current Limit V

V

Output Voltage Noise C

Enable Input

Enable Input Voltage Logic Low (Regulator Shutdown)

Logic High (Regulator Enabled)

Enable Input Current V

V

ERROR Flag Output (LDO 2)

V

ERR

High Threshold, % of nominal V

VOL Flag Output Logic Low Voltage; IL = 100µA 0.02 0.1 mV

I

ERR

+1.0V for higher output of the regulator pair; C

OUT

≤ +125°C; unless noted.

J

= 1.0µF, I

OUT

–1.0 +1.0 %

OUT

= 100µA; TJ = 25°C, bold values indicate

OUT

+1V to 5.5V –0.3 0.02 0.3 %/V

OUT

–0.6 0.6

= 100µA to 150mA (Regulator 1 and 2) 0.2 1.0 %

OUT

= 100µA to 300mA (Regulator 2) 1.5 %

OUT

Note 6 I

= 150mA (Regulator 1 and 2) 120 190 mV

OUT

250 mV

= 300mA (Regulator 2) 240 340 mV

OUT

420

OUT1

= I

= 0µA 48 65 µA

OUT2

80 µA

= 150mA & I

OUT1

≤ 0.4V 2.0 µA

EN

= 1.0µF ceramic; C

OUT

OUT

= 0V (Regulator 1) 150 280 460 mA

OUT

= 0V (Regulator 2) 300 450 700 mA

OUT

=1µF, C

OUT

BYP

= 300mA 60 µA

OUT2

= 10nF 60 dB

BYP

= 1.0µF ceramic; C

= 10nF 40 dB

BYP

=0.01µF, 10Hz to 100kHz 30 µVrms

0.6 V

1.8 V

< 0.6V (Regulator Shutdown) –1 0.01 +1 µA

IL

> 1.8V (Regulator Enabled) –1 0.01 +1 µA

IH

Low Threshold, % of nominal V

(Flag ON) 90 %

OUT2

(Flag OFF) 96 %

OUT2

Flag Leakage Current, Flag OFF –1 0.01 +1 µA

MIC2210 4 November 2004