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MIC2219
Micrel, Inc.
MIC2219
Dynamically Adjustable Dual Cap LDO
General Description
The MIC2219 is a dual Cap low dropout regulator. The first regulator is capable of sourcing 150mA, while the second regulator can source up to 300mA. Ideal for battery operated applications, the MIC2219 offers 1% accuracy, extremely low dropout voltage (80mV @ 100mA), and extremely low ground current, only 48A total. Equipped with TTL logic compatible enable pins, the MIC2219 can be put into a zero-off-mode current state, drawing no current when disabled. Separate enable pins allow individual control of each output voltage. The additional feature incorporated in the MIC2219 is bringing out the feedback nodes to two external pins, allowing for dynamic adjustment of the LDO output voltages. The MIC2219 is a Cap design, operating with very small ceramic output capacitors for stability, reducing required board space and component cost. The MIC2219 is available in fixed output voltages in the 10-pin 3mm x 3mm MLFTM leadless package.
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 * Feedback pins externally accessible * Low dropout voltage of 80mV @ 100mA * Ultra-low quiescent current of 48A total (24A/LDO) * High output accuracy: +1.0% initial accuracy +2.0% over temperature * Thermal shutdown protection * Current limit protection * Tiny 10-pin 3mm x 3mm MLFTM package
Applications
* * * * Cellular phones Wireless modems PDAs LEDs
Typical Application
MIC2219-xxBML VIN
OFF ON
VOUT1 VOUT2 FB1 FB2 GND 1F Ceramic 1F Vibrator Motor LEDs x10
EN1 EN2 CBYP
OFF ON
0.01F
MIC2219 Typical Cell Phone Application
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc. Micrel, Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
April 2005
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M9999-042105
MIC2219
Micrel, Inc.
Ordering Information
Part Number Full Part Number MIC2219-3.0/3.3BML Standard MIC2219-PSBML Pb-Free MIC2219-PSYML Voltage* (Vo1/Vo2) 3.0V/3.3V Junction Temp. Range -40C to +125C Package 10-Pin 3x3 MLFTM
*For other output voltage options, contact Micrel marketing.
Pin Configuration
VIN 1 EN1 2 EN2 3 CBYP 4 FB1 5 10 VOUT1 9 VOUT2 8 NC 7 FB2 6 GND
Voltage Adj. 1.5 1.6 1.8 1.85 1.9 2.0
Code A F W G D Y H
10-Pin 3mm x 3mm MLFTM (ML) (Top View)
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
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MIC2219
Micrel, Inc.
Pin Description
Pin Number 1 2 3 4 5 6 7 8 9 10 EP Pin Name VIN EN1 EN2 CBYP FB1 GND FB2 N/C VOUT2 VOUT1 GND Pin Function Supply Input: (VIN1 and VIN2 are internally tied together.) Enable Input to Regulator 1: Enables regulator 1 output. Active high input. High = on, low = off. Do not leave floating. Enable Input to Regulator 2: Enables regulator 2 output. Active high input. High = on, low = off. Do not leave floating. Reference Bypass: Connect external 0.01F to GND to reduce output noise. May be left open. Feedback Node (OUT1). Connected to internal feedback resistor divider network. Ground: Connect externally to Exposed Pad. Feedback Node (OUT2). Connected to internal feedback resistor divider network. No Connection. Output of Regulator 2: 300mA output current. Output of Regulator 1: 150mA output current. Ground: Internally connected to the Exposed Pad. Connect externally to pin 6.
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M9999-042105
MIC2219
Micrel, Inc.
Absolute Maximum Rating (Note 1)
Supply Input Voltage (VIN) .................................... 0V to 7V Enable Input Voltage (VEN) ................................... 0V to 7V Power Dissipation (PD) ............... Internally Limited, Note 3 Junction Temperature .............................. -40C to +125C Storage Temperature (TS) ......................... -65C to 150C Lead Temperature (soldering, 5 sec.) ....................... 260C
Operating Ratings (Note 2)
Supply Input Voltage (VIN) ............................ 2.25V to 5.5V Enable Input Voltage (VEN) .................................. 0V to Vin Junction Temperature (TJ) ....................... -40C to +125C Package Thermal Resistance MLFTM-10 (JA) .................................................... 60C/W MLFTM-10 (JC) 1" square 2 oz. copper ................ 2C/W
Electrical Characteristics (Note 4)
VIN = VOUT +1.0V for higher output of the regulator pair; COUT = 1.0F, IOUT = 100A; TJ = 25C, bold values indicate -40C TJ +125C; unless noted. Parameter Output Voltage Accuracy Output Voltage Temp. Coefficient Line Regulation; Note 5 Load Regulation VIN = VOUT +1V to 5.5V IOUT = 100A to 150mA (regulator 1 and 2) IOUT = 100A to 300mA (regulator 2) Dropout Voltage; Note 6 IOUT = 150mA (regulator 1 and 2) IOUT = 300mA (regulator 2) Ground Pin Current IOUT1 = IOUT2 = 0A IOUT1 = 150mA & IOUT2 = 300mA Ground Pin Current in Shutdown Ripple Rejection VEN 0.4V f = 1kHz; COUT = 1.0F ceramic; CBYP = 10nF f = 1kHz; COUT = 1.0F ceramic; CBYP = 10nF Current Limit VOUT = 0V (regulator 1) VOUT = 0V (regulator 2) Output Voltage Noise Feedback Inputs FB1 Resistance value, output1, VOUT to FB1 Resistance value, output1, FB1 to GND FB2 Resistance value, output2, VOUT to FB2 Resistance value, output2, FB2 to GND Enable Input Enable Input Voltage Logic low (regulator shutdown) Logic high (regulator enabled) Enable Input Current VIL < 0.6V (regulator shutdown) VIH > 1.8V (regulator enabled)
Note 1. Note 2. Note 3. Note 4. Note 5. Exceeding maximum rating may damage the device. The device is not guaranteed to work outside its operating rating. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) - TA) / JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. Specification for packaged product only. Minimum input for line regulation test is set to VOUT + 1V relative to the highest output voltage.
Conditions Variation from nominal VOUT
Min -1.0 -2.0
Typ
Max +1.0 +2.0
Units % % ppm/C
40 -0.3 -0.6 0.02 0.2 0.3 0.6 1.0 1.5 120 240 48 60 1.0 60 40 150 300 280 450 30 460 700 190 250 340 420 65 80
%/V % % mV mV mV A A A A dB dB mA mA Vrms
COUT =1F, CBYP =0.01F, 10Hz to 100kHz
830 580 972 580
k k k k
0.6 1.8 -1 -1 0.01 0.01 +1 +1
V V A A
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MIC2219
Note 6.
Micrel, Inc.
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.
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MIC2219
Micrel, Inc.
Typical Characteristics
Spectral Noise Density Output 1
10E-6 100A Load
80
PSRR Output 1
CBYP = 100nF
80
PSRR Output 2
CBYP = 100nF
60
PSRR (dB)
CBYP = 10nF
60
PSRR (dB)
CBYP = 10nF
SPECTRAL NOISE DENSITY (V/root Hz)
1E-6
40
CBYP = 1nF
40
CBYP = 1nF
100E-9
20
VIN = VOUT + 1 IOUT = 150mA COUT = 1F
20
VIN = VOUT + 1 IOUT = 300mA COUT = 1F
COUT = 1F C = 1F
IN
CBYP = 0.01F 10E-9 10 1k 100 10k 100k FREQUENCY (Hz) 1M
0 10
10k 100k 1M 100 1k FREQUENCY (Hz)
0 0.01
1k 10k 100k 0.1 FREQUENCY (Hz)
1M
SPECTRAL NOISE DENSITY (V/root Hz)
Spectral Noise Density Output 2
10E-6 100A Load
OUTPUT VOLTAGE (V)
Dropout Characteristics Output 1
3.5
OUTPUT VOLTAGE (V)
Dropout Characteristics Output 2
3.5 3.0 Load = 100A 2.5 2.0 1.5 1.0 0.5 0 0 1 2 3 4 5 INPUT VOLTAGE (V) 6 Load = 300mA
3.0 Load = 100A 2.5 2.0 1.5 1.0 0.5 0 0 1 2 3 4 5 INPUT VOLTAGE (V) 6 Load = 150mA
1E-6
100E-9
COUT = 1F C = 1F
IN
CBYP = 0.01F 10E-9 10 100 1k 10k 100k FREQUENCY (Hz) 1M
150
Dropout Voltage Output 1
DROPOUT VOLTAGE (mV)
150mA Load
Dropout Voltage Output 2
350 300 250 200 150 100 50 0 -40 -20 0 20 40 60 80 100120140 TEMPERATURE (C) GROUND CURRENT (A) 300mA Load
Ground Current vs. Supply Voltage
60 50 40 30 20 10 0 0 1 2 3 4 5 SUPPLY VOLTAGE (V) 6 Output 1 and 2 with 100A Load
DROPOUT VOLTAGE (mV)
100
50
0 -40 -20 0 20 40 60 80 100120140 TEMPERATURE (C)
Ground Current vs. Output 1 Current
60 60
Ground Current vs. Output 2 Current
60 GROUND PIN CURRENT (A) 50 GROUND CURRENT (A) 50 40 30 20 10 0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA)
Ground Pin Current
1mA 100A
GROUND CURRENT (A)
50 40 30 20 10 0 0 20 40 60 80 100 120 140 OUTPUT 1 LOAD CURRENT (mA)
40 0A 30 20 10 Load on both outputs 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
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MIC2219
Micrel, Inc.
Typical Characteristics (cont.)
Ground Current vs. Output Current
GROUND CURRENT (A)
35
35 30 25 20 15 10 5
Ground Current vs. Output Current
GROUND CURRENT (A)
60 50
Ground Current vs. Output Current
GROUND CURRENT (A)
30 25 20 15 10 5 LDO1 Only LDO2 Disabled (VEN2 = LOW) LDO1
LDO2
Both Enabled 40 30 20 10 Both LDOs Active LDO2 = 300mA Output Current LDO1 Varied from 0 to Full Load
LDO2 Only LDO1 Disabled (VEN1 = LOW)
0 0 50 100 150 OUTPUT 1 LOAD CURRENT (mA)
0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA)
0 0 50 100 150 OUTPUT 1 LOAD CURRENT (mA)
60 GROUND CURRENT (A) 50
Ground Current vs. Output Current
OUTPUT VOLTAGE (V)
Output Voltage vs. Load Current
3.003 OUTPUT VOLTAGE (V) 3.002 3.001 3.000 2.999 2.998 2.997 2.996 2.995 0 25 50 75 100 125 150 OUTPUT 1 LOAD CURRENT (mA) 3.304 3.303 3.302 3.301 3.300 3.299 3.298 3.297 3.296 3.295
Output Voltage vs. Load Current
Both Enabled 40 30 20 10 Both LDOs Active LDO1 = 150mA Output Current LDO2 Varied from 0 to Full Load
0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA)
0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA)
Output Voltage 1 vs. Temperature
OUTPUT VOLTAGE (V)
Output Voltage 2 vs. Temperature
ENABLE THRESHOLD (V)
Enable Voltage Threshold vs. Supply Voltage
1.60 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 3.25 3.75 4.25 4.75 5.25 SUPPLY VOLTAGE (V)
3.02 3.00 2.98 2.96 2.94 2.92 2.90 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
OUTPUT VOLTAGE (V)
3.10 3.08 100A load 3.06 3.04
3.40 3.38 100A load 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 -60 -40 -20 0 20 40 60 80 100 120 140 3.20
TEMPERATURE (C)
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MIC2219
Micrel, Inc.
Functional Characteristics
Enable Characteristics
Load Transient Response (LDO 1)
150mA
VOUT1 IOUT1 (50mV/div) (100mA/div)
100A
ENABLE1 (1V/div)
OUTPUTT1 (1V/div)
VOUT2 (50mV/div)
CIN = 1F COUT = 1F CBYP = 10nF VIN = 4.2V
CIN = 1F COUT = 1F CBYP = 0.01F VIN = VOUT+1V
Time (100s/div)
Time (4s/div)
Load Transient Response (LDO 2)
300mA
VOUT2 IOUT2 (100mV/div) (200mA/div)
100A
VOUT1 (100mV/div)
CIN = 1F COUT = 1F CBYP = 0.01F VIN = VOUT+1V
Time (4s/div)
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MIC2219
Micrel, Inc.
Functional Diagram
VIN LDO1 EN1
OUT1 FB1
LDO2 EN2 OUT2 FB2
CBYP
Reference
GND
MIC2219 Fixed Voltage Block Diagram
Functional Description
The MIC2219 is a high performance, low quiescent current power management IC consisting of two Cap low-dropout regulators. 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. 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. Input Capacitor Good bypassing is recommended from input to ground to help improve AC performance. A 1F capacitor or greater located close to the IC is recommended. Bypass Capacitor The internal reference voltage of the MIC2219 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 0.01F, but it can be increased without limit. Output Capacitor Each regulator output requires a 1F ceramic output capacitor for stability. The output capacitor value can be increased to improve transient response, but performance has been optimized for a 1F ceramic type output capacitor. X7R/X5R dielectric-type ceramic capacitors are recommended because of their temperature performance. X7Rtype 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 an X7R ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range.
April 2005
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M9999-042105
MIC2219
Micrel, Inc.
Package Information
DIMENSIONS: mm
0.85 +0.15 -0.05 3.00 BSC. 1.50 BSC. 0.48 typ. 0.01 +0.04 -0.01 0.23 +0.07 -0.05 1 2 3 0.20 dia 3.00 BSC. 5.0 1 2 3 1.15 +0.15 -0.15 2.30 +0.15 -0.15 1.60 +0.15 -0.15 0.80 +0.15 -0.15 PIN 1 ID
1.50 BSC.
0.50 BSC. 0.40 +0.15 -0.05 TOP BOTTOM
SEATING PLANE TERMINAL TIP
0.23 +0.07 -0.05
0.01 +0.04 -0.01
0.50 BSC. TERMINAL TIP ODD TERMINAL SIDE
0.50 BSC.
EVEN TERMINAL SIDE
10-Lead MLFTM (ML)
MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL
+ 1 (408) 944-0800
FAX
+ 1 (408) 474-1000
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 reserves the right to change circuitry and specifications at any time without notification to the customer. 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 for any damages resulting from such use or sale. (c) 2003 Micrel, Incorporated. M9999-042105
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April 2005

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