Document
NCP6360
Mini Buck Converter for RF Power Amplifiers
The NCP6360, a PWM synchronous step−down DC−to−DC converter, is optimized for supplying RF Power Amplifiers (PAs) used into 3G/4G wireless systems (Mobile/ Smart Phones, Phablets, Tablets, ...) powered by single−cell Lithium−Ion batteries. The device is able to deliver up to 800 mA. The output voltage is monitorable from 0.6 V to 3.4 V by an analog control pin VCON. The analog control allows dynamically optimizing the RF Power Amplifier’s efficiency during a communication while for example in roaming situation with as a benefit an increased talk time. Also at light load for optimizing the DC−to−DC converter efficiency, the NCP6360 enters automatically in a PFM mode and operates in a slower switching frequency corresponding to a reduced quiescent current in regards to the PWM mode for which the device operates at a switching frequency of 6 MHz. Synchronous rectification offers improved system efficiency. The NCP6360 is available in a space saving, low profile 1.5 x 1.0 mm CSP−6 package.
Features
• Input Voltage from 2.7 V to 5.5 V for Battery Powered Applications • Adjustable Output Voltage (0.6 V to 3.4 V) • 6 MHz Switching Frequency • Uses 470 nH Inductor and 4.7 mF Capacitor for Optimized Footprint
and Solution Thickness
• PFM /PWM Automatic Mode Change for High Efficiency • Low 30 mA Quiescent Current • Thermal Protections to Avoid Damage of the IC • Small 1.5 x 1.0 mm / 0.5 mm Pitch CSP Package • This is a Pb−Free Device
Typical Applications
• 3G / 4G Wireless Systems, Smart Phones, Phablets and Webtablets
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WLCSP6, 1.00x1.50 CASE 568AN
MARKING DIAGRAM 60 AYW G
A = Assembly Location Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering, marking and shipping information on page 16 of this data sheet.
VCON Voltage control From external DAC
EN Processor or System Supply
NCP6360
Vout Control
Thermal Protection Enabling
DCDC Buck
1.0 A 6.0 MHz
FB
PVIN
VBAT (Battery or System Supply)
10 mF SW
DCDC Out
0.47 mH PGND
4.7 mF
Rev 0.00
Figure 1. NCP6360 Block Diagram
© Semiconductor Components Industries, LLC, 2014
January, 2019 − Rev. 3
1
Publication Order Number: NCP6360/D
DAC GPI/O
NCP6360
VCON Voltage control From external DAC
EN
NCP6360
Vout Control
Thermal Protection Enabling
DCDC Buck 1.0 A 6.0 MHz
VBAT
FB
PVIN
Battery or System Supply
10 uF
SW 0.47 uH
DCDC Out
PGND
4.7 uF
Modem
RF TX Power Envelop Detection
RF IN
3G/4G PAs
RF OUT
Coupler
Antenna Switch
Figure 2. Typical Application
1.0 mm
1.5 mm
A1 EN B1 VCON C1 FB
A2 PVIN
B2 SW C2 PGND
Figure 3. Pin Out (Top View)
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NCP6360
PIN FUNCTION DESCRIPTION
Pin Name
Type
Description
A1 EN
Input
Enable Control. Active high will enable the part. There is an internal pull down resistor on this pin.
A2
PVIN
Power
DC−DC Power Supply. This pin must be decoupled to ground by a 10 mF and 1 mF ceramic
Input
capacitors. These capacitors should be placed as close as possible to this pin.
B1 VCON
Input
Voltage Control Analog Input. This pin controls the output voltage. It must be shielded to protect against noise. VOUT = 2.5 x VCON
B2
SW
Power
DC−DC Switch Power. This pin connects the power transistors to one end of the inductor. Typical
Output application (6 MHz) uses 0.470 mH inductor; refer to application section for more information.
C1
FB
Power
DC−DC Feedback Voltage. Must be connected to the output capacitor positive terminal. This is the
Input
input of the error amplifier.
C2
PGND
Ground DC−DC Power Ground. This pin is the power ground and carries high switching current. High
quality ground must be provided to prevent noise spikes. To avoid high−density current flow in a
limited PCB track, a local ground plane that connects all power grounds together is recommended.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Analog and power pins: PVIN, SW, FB VCON pin
Digital pin: EN: (Note 3)
Input Voltage Input Current
Operating Ambient Temperature Range
Operating Junction Temperature Range (Note 1)
Storage Temperature Range
Maximum Junction Temperature
Thermal Resistance Junction−to−Ambient (Note 2)
Electrostatic Discharge (ESD) Protection, (Note 3)
Human Body Model Charged Device Model
VA VVCON
VDG IDG TA TJ TSTG TJMAX RqJA HBM CDM
−0.3 to + 7.0 −0.3 to + VA + 0.3 ≤ +7.0
−0.3 to VA +0.3 ≤ 7.0 10
−40 to +85 −40 to +125 −65 to + 150 −40 to +150
85 2.0 1.5
V V
V mA °C °C °C °C °C/W kV
Moisture Sensitivity (Note 4)
MSL
Level 1
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. The thermal shutdown set to 165°C (typical) avoids potential irreversible damage on the device due to power dissipatio.