MIC2808-NNYFT TR Micrel Inc, MIC2808-NNYFT TR Datasheet

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MIC2808-NNYFT TR

Manufacturer Part Number
MIC2808-NNYFT TR
Description
IC RF PA SOLUTION 600MA 16-FTMLF
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC2808-NNYFT TR

Function
Power Management
Frequency
2MHz
Rf Type
CDMA, W-CDMA, WLL
Secondary Attributes
2.7 V ~ 5.5 V Supply
Package / Case
16-UFMLF®
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
576-3718-2
General Description
The MIC2808 integrates a high performance 600mA
DC/DC step down regulator intended for powering a power
amplifier (PA) in a mobile phone with dual low noise low
dropout (LDO) regulators for the rest of the RF section.
Optimized for low noise performance, the MIC2808
improves efficiency in the handset without compromising
quality.
The MIC2808 has a 2MHz, constant frequency pulse width
modulated (PWM) DC/DC regulator designed for low noise
operation and high efficiency. The output voltage (V
variable from 0.3V to the input voltage (V
from 0.3V to 3.6V through a DAC input when V
The regulator will work in a 100% duty cycle mode to offer
maximum power and efficiency in the application. In
addition to 100% duty cycle, the DC/DC regulator has a
bypass mode of operation where the input voltage node
(PVIN pin) is shorted to the output voltage node (OUT pin)
through a 95mΩ switch.
The integrated dual low noise low dropout regulators are
optimized for high PSRR capability and fast turn-on times.
The constant frequency DC/DC regulator along with dual
low noise LDO regulators enables a very quiet and
efficient solution for mobile applications.
The MIC2808 is a µCap design, operating with small
ceramic output capacitors and inductors for stability,
reducing required board space and component cost and it
is available in the tiny 2.0mm x 2.5mm TMLF
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Typical Application
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
July 2009
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
CDMA2000/WCDMA RF Power Supply Circuit
IN
®
), adjustable
package.
IN
> V
OUT
OUT
) is
.
Features
• 2.7V to 5.5V input voltage range
• Stable with ceramic output capacitors
• Tiny 16-pin 2.0mm x 2.5mm TMLF
• Thermal shutdown protection
• Current limit protection
RF PA Power Supply DC/DC Regulator
• Adjustable output power supply – DAC controlled
• Bypass mode operation
• Up to 600mA output current in PWM mode
• 100% duty cycle operation for maximum efficiency
• Tiny 4.7µH, 1µF output inductor and capacitor
• Low-noise 2MHz PWM operation
• >90% efficiency
Dual Low Noise Low Dropout Regulators
• High accuracy – ±2% over temperature
• High PSRR – greater than 70dB
• Very low output noise – 32µVrms
• LDO1 – 200mA output current capability
• LDO2 – 30mA output current capability
Applications
• CDMA2000 mobile phones
• UMTS/WCDMA mobile phones
• WiMAX/Wibro modules
• WiFi modules
• Power amplifier modules (PAMs) with linear PAs
2MHz, 600mA DC/DC w/DAC Input and
V
Internal 95mΩ switch between PVIN and OUT pins
V
OUT
DAC
Bypass Switch, Dual Low Noise
200mA/30mA LDO Regulators
RF PA Power Management IC
= V
> 1.2V
DAC
x 3
MIC2808
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5
V
I
OUT
DC/DC Output Voltage
IN
= 4.2V
vs. DAC Voltage
= 100mA
DAC VOLTAGE (V)
®
Package
M9999-071709-A

Related parts for MIC2808-NNYFT TR

MIC2808-NNYFT TR Summary of contents

Page 1

... The constant frequency DC/DC regulator along with dual low noise LDO regulators enables a very quiet and efficient solution for mobile applications. The MIC2808 is a µCap design, operating with small ceramic output capacitors and inductors for stability, reducing required board space and component cost and it is available in the tiny 2 ...

Page 2

... July 2009 LDO1/LDO2 Junction (3) Voltage Temp. Range 2.85V/2.85V –40°C to +125°C LDO1 VIN EN2 BYP DAC 16-Pin 2.0mm x 2.5mm Thin MLF (Top View) 2 (1) Package ® 16-Pin 2.0mm x 2.5mm Thin MLF PGND SW PVIN EN1 AVIN ® (FT) MIC2808 (2) Lead Finish Pb-Free M9999-071709-A ...

Page 3

... Switch: Internal power MOSFET output switches of DC/DC regulator. 13 PGND Power ground. 14, 15 OUT Drain of internal bypass switch, also serves as feedback for the internal regulator. 16 LDO2 Output of the LDO2. July 2009 = 1.5V ) when V > V DAC OUT IN OUT ≤ OUT 3 MIC2808 . Bypass mode is enabled M9999-071709-A ...

Page 4

... OUT A Min Typ 2.7 480 1.3 70 0.01 2.6 85 160 20 1 100 490 360 1.8 1.746 0.05 0.2 0.55 0.59 0.65 0.85 2 1.8 MIC2808 Max Units V 5.5 µ µ 2.7 mV ºC ºC 5 µA % 650 µA 450 µ ...

Page 5

... OUT +1V to 5.5V > 2.8V OUT > 2.8V OUT > 2.8V OUT = 0.1µF BYP = 0.1µF BYP OUT +1V to 5.5V > 2.8V OUT > 2.8V OUT = 0.1µF BYP = 0.1µF BYP 5 MIC2808 Min Typ Max Units 25 µs 50 0.15 µ V/V 1.2 V 1.176 1.224 µ 150 mΩ ...

Page 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. 8. Ground pin current is the regulator quiescent current. July 2009 (ambient temperature D(max) J(max θ Exceeding the maximum allowable power A JA M9999-071709-A MIC2808 ...

Page 7

... INPUT VOLTAGE (V) DC/DC Switching Frequency vs. Temperature 3.5 3.0 2.5 2 0.5V DAC 1 1.5V OUT I = 300mA OUT 0.5 -40 - 100 120 TEMPERATURE (°C) 7 MIC2808 1.5V DC/DC Efficiency OUT 100 4. 3. 0.1 0.2 0.3 0.4 0.5 OUTPUT CURRENT (A) DC/DC Line Regulation 1 ...

Page 8

... 2.85V OUT 2.2µF OUT 0 0 100 1000 FREQUENCY (kHz) 8 MIC2808 LDO2 Line Regulation 2.860 2.855 2.850 2.845 I = 15mA OUT C = 1µF OUT 2.840 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 INPUT VOLTAGE (V) LDO1 Dropout Voltage vs. Temperature 2.85V OUT ...

Page 9

... Micrel, Inc. Typical Characteristics (LDO1/LDO2 cont.) LDO1/LDO2 Output Noise Spectral Density 10 1 0 2.85V OUT C = 1µF OUT 0.001 0.01 0 100 1000 10000 FREQUENCY (kHz) July 2009 9 MIC2808 M9999-071709-A ...

Page 10

... L = 4.7µH OUT Time (400ns/div) July 2009 C = 1µF OUT DC/DC Load Transient 300mA 1.8V OUT L = 4.7µ 1µF 10mA OUT Time (20µs/div ) 10 DC/DC Start-Up Waveforms 1.8V OUT I = 300mA OUT L = 4.7µ 1µF OUT Time (10µs/div ) M9999-071709-A MIC2808 ...

Page 11

... Micrel, Inc. Functional Characteristics (continued) LDO1 Start-Up Waveforms Time (10µs/div) July 2009 V = 3.6V 10mA 2.85V OUT I = 200mA OUT C = 2.2µF OUT 11 MIC2808 LDO1 Load Transient 200mA 2.85V OUT C = 2.2µF OUT Time (20µs/div) M9999-071709-A ...

Page 12

... Micrel, Inc. Functional Diagram July 2009 MIC2808 Block Diagram 12 MIC2808 M9999-071709-A ...

Page 13

... Micrel, Inc. Device Functional Description The MIC2808 is a power management IC with a single integrated step-down regulator and two low dropout regulators. LDO1 is a 200mA low dropout regulator and LDO2 is a 30mA low dropout regulator. The 500mA pulse-width-modulated (PWM) utilizes a dynamically adjustable output voltage for powering RF power amplifiers ...

Page 14

... July 2009 Inductor Selection The MIC2808 is designed for use with a 4.7µH inductor. Proper selection should ensure that the inductor can handle the maximum average and peak currents required by the load. Maximum current ratings of the inductor are generally given in two methods ...

Page 15

... L2.5mm x W2.0mm x H1.0mm 2MHz 600mA Buck with DAC Input, Bypass Switch and Dual (7) Micrel, Inc. Low Noise 200mA/30mA LDOs 15 OUT OUT L1 4.7µH/ 1µF VIN 2.2µF 6.3V 6.3V PVIN C6 1µF 6.3V AVIN EN EN1 PGND MIC2808 VOUT EN EN1 Qty M9999-071709-A ...

Page 16

... Micrel, Inc. July 2009 Top Layer 16 MIC2808 M9999-071709-A ...

Page 17

... Micrel, Inc. July 2009 Bottom Layer 17 MIC2808 M9999-071709-A ...

Page 18

... 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 July 2009 16-Pin 2.0mm x 2.5mm FC-TMLF indemnify Micrel for any damages resulting from such use or sale. © 2009 Micrel, Incorporated. 18 ® (FT) M9999-071709-A MIC2808 nt ...

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