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

MIC2210 Micrel

Parameter Conditions Min Typ Max Units

DRV Output

Voltage Low I

Leakage Current I

SW Input Voltage Logic Low (DRV Shutdown)

Logic High (DRV Enabled)

SW Input Current V

V

Note 1. Exceeding maximum rating may damage the device.

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

Note 3. The maximum allowable power dissipation of any TA (ambient temperature) is (P

able power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.

Note 4. Specification for packaged product only.

Note 5. Minimum input for line regulation test is set to V

Note 6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V

differential. For outputs below 2.25V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.25V. Minimum
input operating voltage is 2.25V.

= 150mA 0.2 0.5 V

DRV

0.6

= 0mA, V

DRV

= 5.5V, SW = 0V –1 0.01 +1 µA

DRV

0.6 V

1.8 V

< 0.6V (DRV Shutdown) –1 0.01 +1 µA

IL

> 1.8V (DRV Enabled) –1 0.01 +1 µA

IH

D(max)

+ 1V relative to the highest output voltage.

OUT

= T

– TA) / θJA. Exceeding the maximum allow-

J(max)

November 2004 5 MIC2210

MIC2210 Micrel

0

0.5

1

1.5

2

2.5

3

0 1 2 3 4 5

OUTPUT (V)

SUPPLY VOLTAGE (V)

Dr opout C ha rac teris tic s

Output

1

150 mA

100 µA

0

0.5

1

1.5

2

2.5

3

0 1 2 3 4 5

OUTPUT (V)

SUPPLY VOLTAGE (V)

Dr opout C ha rac teris tic s

Output

2

300 mA

100 µA

0

10

20

30

40

50

60

0 1 2 3 4 5 6

GROUND CURRENT (µA)

SUPPLY VOLTAGE (V)

G round Cur ren t

vs

. S upplyVol tage

Output 1 a nd 2
with 100

µA load

0

10

20

30

40

50

60

0 20 40 60 8

0 100 120 140

GROUND CURRENT (µA)

OUTPUT 1 LOAD CURRENT (mA)

G round Cur ren t

vs

. O utput 1 C ur re nt

0

10

20

30

40

50

60

0 5

0 100 150 200 250 300

GROUND CURRENT (µA)

OUTPUT 2 LOAD CURRENT (mA)

G round Cur ren t

vs

. O utput 2 C ur re nt

10E-9

100E-9

1E-6

10E-6

SPECTRAL NOISE DENSITY (V/root Hz)

FREQUENCY (Hz)

S pec tral No is e

Dens ityOutput 1

C

OU T

= 1µF

CIN= 1µF

C

BY P

= 0. 01µF

100µA Load

10

100

1k

10k 100 k

1M

10

100

1k

10k

100 k

1M

10E-9

100E-9

1E-6

10E-6

SPECTRAL NOISE DENSITY (V/root Hz)

FREQUENCY (Hz)

S pec tral No is e

Dens ityOutput 2

100 µA L oad

C

OU T

= 1µF

CIN= 1µF

C

BY P

= 0. 01µF

0

20

40

60

80

0.01 0.1 1 10 100 1000

PSRR (dB)

FREQUENCY (kHz)

P SR R Output 2

C

BY P

= 10 nF

C

BY P

= 10 0nF

C

BY P

= 1nF

VIN= V

OUT

+ 1

I

OUT

= 30 0mA

C

OUT

= 1µF

0

20

40

60

80

0.01 0.1 1 10 100 1000

PSRR (dB)

FREQUENCY (kHz)

P SR R Output 1

C

BY P

= 10 nF

C

BY P

= 10 0nF

C

BY P

= 1nF

VIN= V

OUT

+ 1

I

OUT

= 15 0mA

C

OUT

= 1µF

0

50

100

150

-40 -20 0 20 40 60 80 100 120 140

DROPOUT VOLTAGE (mV)

TEMPERATURE (°C)

Dr opout V olta ge

Output 1

150 mA load

0

50

100

150

200

250

300

350

-40 -20 0 20 40 60 80 100 120 140

DROPOUT VOLTAGE (mV)

TEMPERATURE (°C)

Dr opout V olta ge

Output 2

300 mA load

0

10

20

30

40

50

60

-40

-20

0

204060

80

100

120

140

160

GROUND PIN CURRENT

(µA)

TEMPERATURE (°C)

G round Pin Cu rrent

Loa d on both outputs

0µA

100µA

1mA

Typical Characteristics

MIC2210 6 November 2004

MIC2210 Micrel

0

5

10

15

20

25

30

35

0 5

0 100 150

GROUND CURRENT (µA)

OUTPUT 1 LOAD CURRENT (mA)

G round Cur ren t

vs

. O utput C urr ent

LD O1 Only
LD O2 Disa ble d (V

E N2

= L OW )

LD O1

0

5

10

15

20

25

30

35

0 5

0 100 150 200 250 300

GROUND CURRENT (µA)

OUTPUT 2 LOAD CURRENT (mA)

G round Cur ren t

vs

. O utput C urr ent

LD O2 Only
LD O1 Disa ble d (V

E N1

= L OW )

LD O2

0.00

0.20

0.40

0.60

0.80

1.00

1.20

2.25 2.75 3.25 3.75 4.25 4.75 5.25

SWITCH THRESHOLD (V)

SUPPLY VOLTAGE (V)

S witc h T hres hold

vs . SupplyVol tage

Drive C urrent = 1mA

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

1.60

2.25 2.75 3.25 3.75 4.25 4.75 5.25

ENABLE THRESHOLD (V)

SUPPLY VOLTAGE (V)

E nable Voltage Thres hold

vs . SupplyVol tage

0

10

20

30

40

50

60

0 5

0 100 150

GROUND CURRENT (µA)

OUTPUT 1 LOAD CURRENT (mA)

G round Cur ren t

vs

. O utput C urr ent

B oth L DO s A ctive
LD O2

= 30 0mA
Output C urrent L DO1
Varie d from 0 to F ull Load

B oth E na ble d

0

10

20

30

40

50

60

0 5

0 100 150 200 250 300

GROUND CURRENT (µA)

OUTPUT 2 LOAD CURRENT (mA)

G round Cur ren t

vs

. O utput C urr ent

B oth L DO s A ctive
LD O1

= 15 0mA
Output C urrent L DO2
Varie d from 0 to F ull Load

B oth E na ble d

2.65

2.70

2.75

2.80

2.85

2.90

2.95

-40 -20 0 20 40 60 80 100 120 140

OUTPUT VOLTAGE (V)

TEMPERATURE (°C)

Output V olta ge 2

vs . T emp er atur e

100 µA load

2.85

2.90

2.95

3.00

3.05

3.10

3.15

-40 -20 0 20 40 60 80 100 120 140

OUTPUT VOLTAGE (V)

TEMPERATURE (°C)

Output V olta ge 1

vs . T emp er atur

e

100 µA load

2.820

2.825

2.830

2.835

2.840

2.845

2.850

2.855

2.860

2.865

2.870

0 5

0 100 150 200 250 300

OUTPUT VOLTAGE (V)

OUTPUT 2 LOAD CURRENT (mA)

Output V olta ge

vs

. L oa d C urr ent

2.580

2.585

2.590

2.595

2.600

2.605

2.610

0 25 50 7

5 100 125 150

OUTPUT VOLTAGE (V)

OUTPUT 1 LOAD CURRENT (mA)

Output V olta ge

vs

. L oa d C urr ent

Typical Characteristics (cont.)

November 2004 7 MIC2210

MIC2210 Micrel

Enable Characteristics

Time (100s/div)

VEN

(2V/div)

VOUT1

(2V/div)

VOUT2

(1V/div)

CIN = 1µF
C

OUT

= 1µF Ceramic

C

BYP

= 0.01µF

VIN = 4.3V

Load Transient Response (LDO 1)

Time (4s/div)

IOUT1

(100mA/div)

VOUT1

(50mV/div)

VOUT2

(50mV/div)

CIN = 1µF
C

OUT

= 1µF

C

BYP

= 0.01µF

VIN = V

OUT

+1V

150mA

100A

Load Transient Response (LDO 2)

Time (4s/div)

IOUT2

(200mA/div)

VOUT1

(100mV/div)

VOUT2

(100mV/div)

CIN = 1µF
C

OUT

= 1µF

C

BYP

= 0.01µF

VIN = V

OUT

+1V

300mA

100A

MIC2210 8 November 2004

MIC2210 Micrel

OUT1

OUT2

ERR

DRV

NGNDGND

SW

CBYP

EN2

EN1

VIN

LDO1

LDO2

Reference

Error

Comparator

OUT1

ADJ1

OUT2

ADJ2

ERR

DRV

NGNDGND

SW

CBYP

EN2

EN1

VIN

LDO1

LDO2

Reference

Error

Comparator

Functional Diagram

MIC2210 Fixed Voltage Block Diagram

MIC2210 Adjustable Voltage Block Diagram

Functional Description

The MIC2210 is a high performance, low quiescent current
power management IC consisting of two µCap low dropout
regulators, an open-drain driver. The first regulator is capable
of sourcing 150mA at output voltages from 1.25V to 5V. The
second regulator is capable of sourcing 300mA of current at
output voltages from 1.25V to 5V. An open-drain driver com­pletes the power management chipset, offering the capability
of driving LEDs for keypad backlighting in applications such
as cellphones.

Enable 1 and 2

The enable inputs allow for logic control of both output volt­ages with individual enable inputs. The enable input is active
high, requiring 1.8V for guaranteed operation. The enable
input is CMOS logic and cannot by left floating.

Open-Drain Driver (DRV)

The drive (DRV) pin is an open-drain output capable of sinking
150mA of current. This output is controlled by a logic level
input, the switch (SW) pin. The switch pin is an active high
input and cannot be left floating.

Input Capacitor

Good bypassing is recommended from input to ground to
help improve AC performance. A 1µF capacitor or greater
located close to the IC is recommended.

November 2004 9 MIC2210

MIC2210 Micrel

Bypass Capacitor

The internal reference voltage of the MIC2210 can be by­passed with a capacitor to ground to reduce output noise and
increase power supply rejection (PSRR). A quick-start feature
allows for quick turn-on of the output voltage regardless of
the size of the capacitor. The recommended nominal bypass
capacitor is 0.01µF, but it can be increased without limit.

Output Capacitor

Each regulator output requires a 1µF ceramic output capaci­tor for stability. The output capacitor value can be increased
to improve transient response, but performance has been
optimized for a 1µF ceramic type output capacitor.

X7R/X5R dielectric-type ceramic capacitors are recom­mended because of their temperature performance. X7R-type
capacitors change capacitance by 15% over their operating
temperature range and are the most stable type of ceramic
capacitors. Z5U and Y5V dielectric capacitors change value
by as much as 50% and 60% respectively over their operat­ing temperature ranges. To use a ceramic chip capacitor with
Y5V dielectric, the value must be much higher than a X7R
ceramic capacitor to ensure the same minimum capacitance
over the equivalent operating temperature range.

MIC2210 10 November 2004

MIC2210 Micrel

Package Information

10-Lead MLF™ (ML)

November 2004 11 MIC2210

MIC2210 Micrel

MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL + 1 [phone] FAX + 1 [phone] WEB http://www.micrel.com

This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can

reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into

the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's

use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify

Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

Micrel for any damages resulting from such use or sale.

© 2004 Micrel Incorporated

MIC2210 12 November 2004