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PDF FAN49103 Data sheet ( Hoja de datos )
| Número de pieza | FAN49103 | |
| Descripción | I2C BuckBoost Regulator | |
| Fabricantes | Fairchild Semiconductor | |
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September 2016
FAN49103 — 2.5 A, 1.8 MHz, TinyPower™ I2C 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
1 page  
Electrical Characteristics(7)
Minimum and maximum values are at PVIN = AVIN = 2.5 V to 5.5 V, TA = -40°C to +85°C. Typical values are at TA =
25°C, PVIN = AVIN = VEN = 3.6 V, VOUT = 3.4 V.(8)
Symbol
Power Supplies
Parameter
IQ Quiescent Current
ISD Shutdown Supply Current
VUVLO
Under-Voltage Lockout
Threshold
VUVHYST
Under-Voltage Lockout
Hysteresis
EN, SDA, SCL
VIH HIGH Level Input Voltage
VIL LOW Level Input Voltage
IIN Input Bias Current Into Pin
PG
VPG PG LOW
IPG_LK PG Leakage Current
Switching
Conditions
Min.
PFM Mode, IOUT = 0 mA(9)
PT Mode, IOUT = 0 mA
EN = GND, PVIN = 3.6 V
Falling PVIN
1.95
1.1
Input Tied to GND or PVIN
IPG = 5 mA
VPG = 5 V
Typ.
24
27
0.5
2.00
200
Max. Unit
µA
5.0 µA
2.05 V
mV
V
0.4 V
0.01 1.00 µA
0.4 V
1 µA
fSW Switching Frequency
PVIN = 3.6 V, TA = 25°C
1.6
1.8
2.0 MHz
Ip_LIM Peak PMOS Current Limit
PVIN = 3.6 V
4.6 5.2 5.9 A
Accuracy
VOUT_ACC DC Output Voltage Accuracy
PVIN = 3.6 V, Forced PWM,
IOUT = 0 mA, VOUT = 3.4 V
PVIN = 3.6 V, PFM Mode,
IOUT = 0 mA, VOUT = 3.4 V
3.366
3.366
3.400
3.475
3.434
3.563
V
Notes:
7. Refer to Typical Characteristics waveforms/graphs for Closed-Loop data and its variation with input voltage and
ambient temperature. Electrical Characteristics reflects Open-Loop steady state data. System Characteristics
reflects both steady state and dynamic Close-Loop data associated with the recommended external components.
8. Minimum and Maximum limits are verified by design, test, or statistical analysis. Typical (Typ.) values are not
tested, but represent the parametric norm.
9. Device is not switching.
© 2016 Fairchild Semiconductor Corporation
FAN49103 • Rev. 1.1
5
www.fairchildsemi.com
5 Page 
Typical Characteristics (Continued)
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 28. Short-Circuit Protection
Figure 29. VOUT Transition, 3.4 V <--> 4.0 V, 500 mA
Load
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
25 C
0
2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
VIN(V)
Figure 30. VOUT Transition, 4.0 V <--> 3.4 V, 500 mA Figure 31. Typical Maximum Continuous Load vs.
Load
Input Voltage, VOUT= 3.4 V, 25°C
© 2016 Fairchild Semiconductor Corporation
FAN49103 • Rev. 1.1
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet FAN49103.PDF ] | |
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