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PDF FAN53555 Data sheet ( Hoja de datos )
| Número de pieza | FAN53555 | |
| Descripción | Digitally Programmable TinyBuck Regulator | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de FAN53555 (archivo pdf) en la parte inferior de esta página. Total 29 Páginas | ||
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January 2015
FAN53555
5 A, 2.4 MHz, Digitally Programmable TinyBuck® Regulator
Features
Fixed-Frequency Operation: 2.4 MHz
Best-in-Class Load Transient
Continuous Output Current Capability: 5 A
Pulse Current Capability: 6.5 A (05 Option)
2.5 V to 5.5 V Input Voltage Range
Digitally Programmable Output Voltage:
- 00/01/03/05/08/18 Options: 0.6-1.23 V in 10 mV Steps
- 04/042/09/ Options: 0.603-1.411 V in 12.826 mV Steps
- 23 Option: 0.60-1.3875 V in 12.5 mV Steps
- 24 Option: 0.603-1.420 V in 12.967 mV Steps
- 13 Option: 0.8-1.43 V in 10 mV Steps
Programmable Slew Rate for Voltage Transitions
I2C-Compatible Interface Up to 3.4 Mbps
PFM Mode for High Efficiency in Light Load
Quiescent Current in PFM Mode: 60 µA (Typical)
Internal Soft-Start
Input Under-Voltage Lockout (UVLO)
Thermal Shutdown and Overload Protection
20-Bump Wafer-Level Chip Scale Package (WLCSP)
Applications
Application, Graphic, and DSP Processors
- ARM™, Krait™, OMAP™, NovaThor™, ARMADA™
Hard Disk Drives
Tablets, Netbooks, Ultra-Mobile PCs
Smart Phones
Gaming Devices
All trademarks are the property of their respective owners.
© 2010 Fairchild Semiconductor Corporation
FAN53555 • Rev. 1.13
Description
The FAN53555 is a step-down switching voltage regulator
that delivers a digitally programmable output from an input
voltage supply of 2.5 V to 5.5 V. The output voltage is
programmed through an I2C interface capable of operating up
to 3.4 MHz.
Using a proprietary architecture with synchronous
rectification, the FAN53555 is capable of delivering 5 A
continuous at over 80% efficiency, while maintaining over
80% efficiency at load currents as low as 10 mA. Pulse
currents as high as 6.5 A can be supported by the 05 option.
The regulator operates at a nominal fixed frequency of
2.4 MHz, which reduces the value of the external components
to 330 nH for the output induction and as low as 20 µF for the
output capacitor. Additional output capacitance can be added
to improve regulation during load transients without affecting
stability. Inductance up to 1.2 µH may be used with additional
output capacitance.
At moderate and light loads, Pulse Frequency Modulation
(PFM) is used to operate in Power-Save Mode with a typical
quiescent current of 60 µA. Even with such a low quiescent
current, the part exhibits excellent transient response during
large load swings. At higher loads, the system automatically
switches to fixed-frequency control, operating at 2.4 MHz. In
Shutdown Mode, the supply current drops below 1 µA,
reducing power consumption. PFM Mode can be disabled if
constant frequency is desired. The FAN53555 is available in a
20-bump, 1.6 x 2 mm, WLCSP.
EN
SDA
SCL
VSEL
PVIN
CIN1
CIN
FAN53555
VOUT
SW L1
COUT
GND
AGND
VDD
Core
Processor
(System Load)
GND
Figure 1. Typical Application
www.fairchildsemi.com
1 page  
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
IC Not Switching
Voltage on SW, VIN Pins
IC Switching
VIN
Voltage on EN Pin
Tied without Series Resistance)
Tied through Series Resistance of at Least 100
Voltage on All Other Pins IC Not Switching
VOUT Voltage on VOUT Pin
VINOV_SLEW Maximum Slew Rate of VIN > 6.5 V, PWM Switching
ESD
Electrostatic Discharge
Protection Level
Human Body Model per JESD22-A114
Charged Device Model per JESD22-C101
TJ Junction Temperature
TSTG Storage Temperature
TL Lead Soldering Temperature, 10 Seconds
Note:
6. Lesser of 7 V or VIN+0.3 V.
Min.
Max.
-0.3 7.0
-0.3 6.5
-0.3
-0.3
-0.3
2.0
VIN(6)
VIN(6)
-0.3 3.0
100
2500
1500
-40 +150
-65 +150
+260
Unit
V
V
V
V
V/ms
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
VIN
IOUT
L
CIN
COUT
TA
TJ
Parameter
Supply Voltage Range
Output Current
Inductor
Input Capacitor
Output Capacitor
Operating Ambient Temperature
Operating Junction Temperature
Min.
2.5
0
-40
-40
Typ.
0.33
10
44
Max.
5.5
5
+85
+125
Unit
V
A
µH
µF
µF
°C
°C
Thermal Properties
Symbol
Parameter
JA Junction-to-Ambient Thermal Resistance(7)
Note:
7. See Thermal Considerations in the Application Information section.
Min.
Typ.
38
Max.
Unit
°C/W
© 2010 Fairchild Semiconductor Corporation
FAN53555 • Rev. 1.13
5
www.fairchildsemi.com
5 Page 
Typical Characteristics
Unless otherwise specified, Auto PFM/PWM, VIN = 3.6 V, VOUT = 1.2 V, SCL = SDA = VSEL = EN = 1.8 V, TA = 25°C; circuit
and components according to Figure 1 and Table 1.
92%
90%
88%
86%
84%
82%
80%
78%
76%
0
2.7 VIN
3.6 VIN
5.0 VIN
1000
2000
3000
Load Current (mA)
4000
5000
Figure 7. Efficiency vs. Load Current and Input Voltage
90%
88%
86%
84%
82%
80%
78%
76%
74%
72%
70%
0
2.7 VIN
3.6 VIN
5.0 VIN
1000
2000
3000
Load Current (mA)
4000
5000
Figure 9. Efficiency vs. Load Current and Input Voltage,
VOUT=0.9 V
90%
85%
2.7 VIN
3.6 VIN
5.0 VIN
80%
92%
90%
88%
-40C
+25C
+85C
86%
84%
82%
80%
78%
76%
0
1000
2000
3000
Load Current (mA)
4000
5000
Figure 8. Efficiency vs. Load Current and Temperature
90%
88%
86%
84%
82%
80%
78%
76%
74%
72%
70%
0
1000
2000
3000
Load Current (mA)
4000
-40C
+25C
+85C
5000
Figure 10. Efficiency vs. Load Current and Temperature,
VIN=5 V, VOUT=1.2 V
90%
85%
80%
75%
75%
70%
65%
60%
0
1000
2000
3000
Load Current (mA)
4000
5000
70%
65%
60%
0
1000
3.6VIN, 1.2VOUT, L=MMD-04ABNR33M
3.6VIN, 1.2VOUT, L=VLC5020T-R47M
5.0VIN, 1.2VOUT, L=MMD-04ABNR33M
5.0VIN, 1.2VOUT, L=VLC5020T-R47M
5.0VIN, 0.9VOUT, L=MMD-04ABNR33M
5.0VIN, 0.9VOUT, L=VLC5020T-R47M
2000
3000
4000
5000
Load Current (mA)
6000
7000
Figure 11. Efficiency vs. Load Current and Input Voltage, Figure 12. Efficiency vs. Load Current, VIN=3.6 V and 5 V,
VOUT=0.6 V
VOUT=1.2 V and 0.9 V
© 2010 Fairchild Semiconductor Corporation
FAN53555 • Rev. 1.13
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet FAN53555.PDF ] | |
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