LP3917
www.ti.com
SNVS425A – DECEMBER 2006 – REVISED MARCH 2007
LP3917 CDMA Cellular Phone Power Management Unit
Check for Samples: LP3917
FEATURES
1
•
2
•
•
•
•
Two High Efficiency Synchronous Magnetic
Buck Regulators, IOUT 800 mA and 600 mA
– High Efficiency PFM Mode @ Low IOUT
– Auto Mode PFM/PWM Switch
Low Inductance 2.2 uH @ 2 MHz Clock
9 Low Noise LDOs
– 3 x 300 mA
– 5 x 150 mA
– 1 x 80 mA
SW Controllable LDO Outputs
USB 2.0 Compatible Transceiver (12 Mbps)
•
•
•
•
•
Thermal Shutdown with Early Warning Alarm
Very Low Sleep Mode Current
Battery Voltage Monitor Output
Interrupt Request for Reducing SW Polling
Ultra Small 3.5x3.5 mm Micro SMDxt 49 Bump
Package
APPLICATIONS
•
CDMA Handsets
Please contact NSC Sales for a full datasheet
for the device.
DESCRIPTION
LP3917 is a complete Power Management Unit designed for CDMA cellular phones. LP3917 PMU contains 9 low
noise low dropout voltage regulators, 2 buck regulators, an USB Transceiver, two comparators and a high speed
serial interface to program on/off conditions and output voltages of individual regulators, and to read status
information of the PMU.
Buck regulators have an automatic switch to PFM mode at low load conditions allowing very good efficiency also
at low output currents.
LDO regulators provide very low noise, 35 uV typ, ideally suited for supplying voltage to RF section.
Two comparators can be used for detecting external accessories like ear plug etc.
LP3917 can use interrupt for alerting BB processor of status changes instead of using inefficient status polling.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Table 1. Key Specifications
VALUE
UNIT
3.0–5.5
V
Noise on LDOs
35
µV
Buck regulators with 3% (typ)
800/600
mA
Input Voltage Range
170 mV typ Dropout Voltage on LDOs @ 300 mA
2% (typ) Output Voltage accuracy on LDOs
Accuracy and up to 90% efficiency
1
2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2007, Texas Instruments Incorporated
LP3917
SNVS425A – DECEMBER 2006 – REVISED MARCH 2007
www.ti.com
SYSTEM DIAGRAM
I/O
Interface
of
Baseband
Processor
Support
2 x DC/DC
Power Domains of
Baseband
Processor
Control
9 x LDO
Memory
USB Transceiver
RF
2 x Comparator
Peripheral Devices
LP3917
2
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Connector
Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Links: LP3917
LP3917
www.ti.com
SNVS425A – DECEMBER 2006 – REVISED MARCH 2007
TYPICAL APPLICATION DIAGRAM
VIN1
VIN2
-
CREF
0.1 PF
BMON
+
Battery
VINBATT
VBATT
10 PF
10 PF
VBATT
MSMC
1.375V/1.875V
@800 mA
SEL1
SW_B1
2.2 PH
Buck
Regulator
#1
R1
C1
FB_B1
10 PF
R2
VBATT
GND_B1
Voltage
Monitor
Voltage
Reference
Thermal
Shutdown
LDO1
UVLO
LDO2
LDO1
4.7 PF
VBATT
SEL2
LDO2
LCD
4.7 PF 2.6/2.8/2.85V
@300 mA
VIN_BUCK
10 PF
MSME
1.8V
@600 mA
MSMP
1.8/1.875/2.6V
@300 mA
RX_EN
FB_B2
2.2 PH
10 PF
Buck
Regulator
#2
SW_B2
LDO3
LDO3 RX/SYNTH
2.85V
@150 mA
2.2 PF
LP3917
GND_B2
LDO4 MSMA
2.6V
@150 mA
2.2 PF
LDO4
VBATT
TCXO_EN
B2_EN
LDO1
LDO5
VBATT
LDO1
1.5k
1.5k
10k
IRQ_N
O/D output
SDA
O/D output
LDO6 TX
2.85V
@150 mA
2.2 PF
LDO6
SCL
PS_HOLD
RESET_N
LDO7
LDO7
Serial
Interface
and
Control
PON_N
VBAT
LDO5 TCXO
2.85V
@80 mA
1 PF
2.2 PF
LDO8 VIBRA
2.85V
@150 mA
2.2 PF
LDO8
HF_PWR
T
PWR_ON
LDO9 CAM/KP
2.85V
@300 mA
4.7 PF
LDO9
200k Options S, M
500k Options Q, QL, N, NL
200k
UIM
2.85V
@150 mA
1.5k
LDO1
VBATT
VBUS
VBATT
LDO1
CMP2
GNDD
+
GNDA
INP2
INP1
D+
CMP1
V1.6
10:
D-
PGM
REF
10:
VM
SUSPEND
VP
1 PF
OE_N
1 PF
USB
Transceiver
RCV
VTRM
LDO1
+
-
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Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Links: LP3917
3
LP3917
SNVS425A – DECEMBER 2006 – REVISED MARCH 2007
www.ti.com
DEVICE PIN DIAGRAM
7
LDO3
LDO1
LDO2
LDO4
CREF
PS_
HOLD
GND_
B1
6
VIN1
RX_EN
TCXO_
EN
SEL1
BMON
FB_B1
SW_B1
5
LDO5
SCL
CMP1
IRQ_N
SEL2
B2_EN
VIN_
BUCK
4
LDO6
SDA
INP1
GNDD
SUS
PEND
FB_B2
SW_B2
3
LDO7
RESET
_N
INP2
PON_N
RCV
VM
GND_
B2
2
LDO8
VIN
BATT
CMP2
HF_
PWR
OE_N
VP
VTRM
1
LDO9
VIN2
GNDA
PWR_
ON
VBUS
D-
D+
A
B
C
D
E
F
G
Figure 1. TOP VIEW
PACKAGE MARKING INFORMATION
XYTT
V0x
4
XY = 2 Digit Date Code
TT = Die Traceability
V0x = LP3917 Product ID
= Pin 1A
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Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Links: LP3917
PACKAGE OPTION ADDENDUM
www.ti.com
29-Aug-2015
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Op Temp (°C)
Device Marking
(4/5)
LP3917RL-M/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V05
LP3917RL-N/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V03
LP3917RL-Q/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V04
LP3917RL-S/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V01
LP3917RLX-M/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V05
LP3917RLX-N/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V03
LP3917RLX-Q/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V04
LP3917RLX-S/NOPB
ACTIVE
DSBGA
YPG
49
TBD
Call TI
Call TI
V01
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
Addendum-Page 1
Samples
PACKAGE OPTION ADDENDUM
www.ti.com
29-Aug-2015
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 2
MECHANICAL DATA
YPG0049xxx
D
0.650±0.075
E
RLA49XXX (Rev B)
4214898/A
NOTES:
A. All linear dimensions are in millimeters. Dimensioning and tolerancing per ASME Y14.5M-1994.
B. This drawing is subject to change without notice.
www.ti.com
12/12
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