MIC2829 Datasheet, PDF (1/52 Pages) Micrel Semiconductor – 3G/4G HEDGE/LTE PMIC with Six Buck Converters, Eleven LDOs and SIM Card Level Translation

MIC2829
3G/4G HEDGE/LTE PMIC with
Six Buck Converters, Eleven LDOs
and SIM Card Level Translation
General Description
The MIC2829 is a highly integrated Power Management
Integrated Circuit (PMIC) designed for 3G/4G
(HEDGE/LTE and WiMAX) USB wireless applications. It is
a complete power management solution which provides
power to processors, dual standard RF (such as
HEDGE/LTE or WiMAX) transceivers and power
amplifiers, memory, USB-PHY associated I/O interfaces
and other system requirements.
The MIC2829 incorporates six DC/DC buck converters,
eleven LDOs and digital level shifters for SIM Card support
inside a single package. Four of the six integrated DC/DC
buck converters incorporate HyperLight Load^TM (HLL)
technology. Each of these buck regulators operate at high
switching speed in PWM mode (4MHz/2.5MHz) and
maintain high efficiency in light load conditions. The high
speed PWM operation allows the use of very small
inductors and capacitors minimizing board area while the
HLL mode enables 87% efficiency at 1mA. HyperLight
Load^TM technology also has unmatched load transient
response to support advance portable processor
requirements.
The remaining two DC/DC buck converters support 100%
duty cycle operation and can deliver greater than 96%
efficiency. This allows pre-regulation of system LDOs for
high efficiency power system partitioning.
The MIC2829 has eleven low dropout regulators (LDOs).
Five general purpose LDOs provide low dropout, excellent
output accuracy of ±3% and only require 40µA of ground
current for each to operate. The remaining six are high
performance Low Noise Regulators (LNRs) which provide
high PSRR and low output noise for sensitive RF
subsystems. Each LNR requires only 20µA of ground
current to operate. The MIC2829 also has three high
speed level shifters for digital SIM Card signal translation
and a 50mA SIM power supply.
The MIC2829 is available in a 76-pin 5.5mm x 5.5mm LGA
and an 85-pin 5.5mm x 5.5mm FBGA package. The
operating junction temperature range for both packages is
from –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s website at: www.micrel.com.
Features
• Input voltage range: 2.7V to 5.5V
Six DC Step-Down Regulators
• Four HyperLight Load^TM step-down regulators
- Low quiescent current – typical 40µA
- DC1: 4MHz / 1000mA
- DC2: 4MHz / 300mA (with voltage scaling)
- DC3: 2.5MHz / 600mA
- DC4: 4MHz / 600mA (with adjustable delay POR)
• Two PWM step-down regulators
- DC5 and DC6: Fixed 2MHz / 800mA
- 100% duty cycle
Eleven Low Dropout Regulators (LDOs)
• Five general purpose 200mA LDOs (LDO1-4, LDO11)
- LDO3: 38mV dropout at 100mA
- LDO2 and LDO4: 80mV dropout at 100mA
- LDO1 and LDO11: 115mV dropout at 100mA
- Output accuracy ± 3%
- 40µA ground current
• Six high performance 200mA LNRs (LDO5-10)
- High PSRR 70dB at 1kHz
- Low noise: 20µV_RMS
- 40mV dropout at 100mA
- Output accuracy ± 3%
- 20µA ground current
• SIM card level translator
• SIM card power supply (50mA)
• Thermal shutdown and current limit protection
• UVLO – under voltage lockout protection
• 76-pin 5.5mm x 5.5mm LGA package
• 85-pin 5.5mm x 5.5mm FBGA package
• –40°C to +125°C operating junction temperature range
Applications
• 4G LTE USB modems
• 3G/4G (HEDGE/LTE) wireless chipsets
• WiMAX modems
• Express card modems
• UMPC/notebook PC wireless data communications
• Portable applications
HyperLight Load is a trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
May 2010
M9999-051410-B