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FAN49103 데이터시트 PDF




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부품번호 FAN49103 기능
기능 I2C BuckBoost Regulator
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FAN49103 데이터시트, 핀배열, 회로
September 2016
FAN49103 2.5 A, 1.8 MHz, TinyPowerI2C Buck-
Boost Regulator
Features
24 µA Typical PFM Quiescent Current
Above 95% Efficiency
Total Layout Area = 11.61 mm2
Input Voltage Range: 2.5 V to 5.5 V
Maximum Continuous Load Current:
- 3.0 A at VOUT=3.4 V, VIN=3.3 V
- 2.5 A at VOUT=3.4 V, VIN=3.0 V
- 2.0 A at VOUT=3.4 V, VIN=2.5 V
I2C Compatible Interface
Programmable Output Voltage:
- 2.8 V to 4.0 V in 25 mV Steps
1.8 MHz Fixed-Frequency Operation in PWM Mode
Automatic / Seamless Step-up and Step-down
Mode Transitions
Forced PWM and Automatic PFM/PWM Mode
Selection
0.5 µA Typical Shutdown Current
Low Quiescent Current Pass-Through Mode
Internal Soft-Start and Output Discharge
Low Ripple and Excellent Transient Response
Internally Set, Automatic Safety Protections
(UVLO, OTP, SCP, OCP)
Package: 20 Bump, 0.4 mm Pitch WLCSP
Description
The FAN49103 is a high efficiency buck-boost switching
mode regulator which accepts input voltages either
above or below the regulated output voltage. Using full-
bridge architecture with synchronous rectification, the
FAN49103 is capable of delivering up to 2.5 A while
regulating the output at 3.4 V. The FAN49103 exhibits
seamless transition between step-up and step-down
modes reducing output disturbances. The output voltage
and operation mode of the regulator can be
programmed through an I2C interface.
At moderate and light loads, Pulse Frequency
Modulation (PFM) is used to operate the device in
power-save mode to maintain high efficiency. In PFM
mode, the part still exhibits excellent transient response
during load steps. At moderate to heavier loads or
Forced PWM mode, the regulator switches to PWM
fixed-frequency control. While in PWM mode, the
regulator operates at a nominal fixed frequency of
1.8 MHz, which allows for reduced external component
values.
The FAN49103 is available in a 20-bump 1.615 mm x
2.015 mm with 0.4 mm pitch WLCSP.
Applications
Smart Phones
Tablets, Netbooks®, Ultra-Mobile PCs
Portable Devices with Li-ion Battery
2G/3G/4G Power Amplifiers
NFC Applications
Figure 1. Typical Application
Ordering Information
Part Number
Output
Discharge
Temperature
Range
Package
Packing
Method
FAN49103AUC340X
Yes
-40 to 85°C
20-Ball (WLCSP) Tape and Reel
Device
Marking
FC
© 2016 Fairchild Semiconductor Corporation
FAN49103 • Rev.1.1
www.fairchildsemi.com




FAN49103 pdf, 반도체, 판매, 대치품
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not
recommended. In addition, extended exposure to stresses above the recommended operating conditions may
affect device reliability. The absolute maximum ratings are stress ratings only.
Symbol
Parameter
PVIN/AVIN PVIN/AVIN Voltage
VOUT VOUT Voltage
SW1, SW2 SW Nodes Voltage
Other Pins
ESD
Electrostatic Discharge Human Body Model per JESD22-A114
Protection Level
Charged Device Model per JESD22-C101
TJ
TSTG
TL
Junction Temperature
Storage Temperature
Lead Soldering Temperature, 10 Seconds
Min. Max.
-0.3 6.5
-0.3 6.5
-0.3 7.0
-0.3 6.5
2000
1000
-40 +150
-65 +150
+260
Unit
V
V
V
V
V
°C
°C
°C
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
Parameter
Min.
Typ.
Max.
Unit
PVIN
IOUT
L
CIN
COUT
TA
TJ
Supply Voltage Range
Output Current(2)
Inductor(5)
Input Capacitance(2,3,4,5)
Output Capacitance(2,3,4,5)
Operating Ambient Temperature
Operating Junction Temperature
2.5 5.5 V
0 2.5 A
1.0 µH
2 47
µF
17 47
µF
-40 +85 °C
-40
+125
°C
Notes:
2. Depends on input and output voltages. Thermal properties of the device should be taken into consideration; refer
to Thermal Consideration in the Application Information section.
3. Typical value reflects the capacitor value needed to meet minimum requirement. Minimum passive component
values indicate effective capacitance which includes temperature, voltage de-rating, tolerance, and stability.
4. Output capacitance affects load transient response and loop phase margin; see Application Information section.
5. Refer to Additional Application Information section.
Thermal Properties
Junction-to-ambient thermal resistance is a function of application and board layout. This data is measured with four-
layer 2s2p with vias JEDEC class boards in accordance to JEDEC standard JESD51. Special attention must be paid
not to exceed junction temperature TJ(max) at a given ambient temperature TA.
Symbol
Parameter
JA Junction-to-Ambient Thermal Resistance(6)
Note:
6. See Thermal Considerations in the Application Information section.
Min.
Typ.
66
Max.
Unit
°C/W
© 2016 Fairchild Semiconductor Corporation
FAN49103 Rev. 1.1
4
www.fairchildsemi.com

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FAN49103 전자부품, 판매, 대치품
Typical Characteristics
Unless otherwise noted, PVIN = AVIN = VEN = 3.6 V, VOUT = 3.4 V, L = 1.0 µH, DFE201612E-1R0M (TOKO), CIN =
47 µF, COUT = 2 x 47 µF, 0603 (1608 metric) CL10A476MQ8NZNE (SEMCO), AUTO Mode, TA = 25°C.
Figure 4. Efficiency vs. Load
Figure 5. Output Regulation vs. Load
Figure 6. Output Regulation vs. Load, FPWM Mode
Figure 7. Quiescent Current (No Switching)
vs. Input Voltage
Figure 8. Quiescent Current (Switching)
vs. Input Voltage
Figure 9. Shutdown Current vs. Input Voltage
© 2016 Fairchild Semiconductor Corporation
FAN49103 Rev. 1.1
7
www.fairchildsemi.com

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FAN49103

I2C BuckBoost Regulator

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