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PDF ADP5301 Data sheet ( Hoja de datos )
| Número de pieza | ADP5301 | |
| Descripción | Ultralow Power Step-Down Regulator | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
50 mA/500 mA, High Efficiency,
Ultralow Power Step-Down Regulator
ADP5301
FEATURES
Input start-up voltage range: 2.15 V to 6.50 V
Operates down to 2.00 V voltage
Ultralow 180 nA quiescent current with no load
Selectable output voltage of 1.2 V to 3.6 V or 0.8 V to 5.0 V
±1.5% output accuracy over full temperature range in
PWM mode
Selectable hysteresis mode or PWM operation mode
Output current
Up to 50 mA in hysteresis mode
Up to 500 mA in PWM mode
VOUTOK flag monitors the output voltage
100% duty cycle operation mode
2 MHz switching frequency with optional synchronization
input from 1.5 MHz to 2.5 MHz
QOD option
UVLO, OCP, and TSD protection
9-ball, 1.65 mm × 1.87 mm WLCSP
−40°C to +125°C junction temperature
APPLICATIONS
Energy (gas and water) metering
Portable and battery-powered equipment
Medical applications
Keep-alive power supplies
GENERAL DESCRIPTION
The ADP5301 is a high efficiency, ultralow quiescent current
step-down regulatorthat draws only a 180 nA quiescent current
to regulate the output at no load.
The ADP5301 runs from an inputstartup voltage range of 2.15 V
to 6.50 V, allowing the use ofmultiple alkaline/NiMH, Li-Ion
cells, or otherpowersources.The output voltage is selectable from
0.8 V to 5.0 V by an external VID resistor and factory fuse. The
total solution requires only fourtiny external components.
The ADP5301 can operate betweenhysteresis mode and PWM
mode via the SYNC/MODE pin. The regulator in hysteresismode
achieves excellent efficiency at a power of less than 1 mW and
provides up to 50 mA of output current. The regulator in PWM
mode produces a lower output ripple andsuppliesup to 500 mA
of output current. The flexible configuration capability during
operation of the device enables veryefficient power management
to meet both the longest battery life and low system noise
requirements.
TYPICAL APPLICATION CIRCUIT
VIN = 3.6V
10µF
ON
OFF
PWM
HYS
PVIN
SW
ADP5301
(9-BALL WLCSP)
EN PGND
2.2µH
10µF
VOUT
SYNC/
MODE
VOUTOK
FB
VID
AGND
Figure 1.
RVID
VID0: 1.2V
VID1: 1.5V
VID2: 1.8V
VID3: 2.0V
VID4: 2.1V
VID5: 2.2V
VID6: 2.3V
VID7: 2.4V
VID8: 2.5V
VID9: 2.6V
VID10: 2.7V
VID11: 2.8V
VID12: 2.9V
VID13: 3.0V
VID14: 3.3V
VID15: 3.6V
The ADP5301 contains a VOUTOK flag, which monitors the
output voltage and runs at a 2 MHz switching frequency in
PWM mode. SYNC/MODE can synchronize to an external
clock from 1.5 MHz to 2.5 MHz.
Other key features in the ADP5301 include separate enabling,
quick output discharge (QOD), and safety featuressuch as
overcurrent protection (OCP), thermal shutdown(TSD), and
input undervoltage lockout (UVLO).
The ADP5301 is available in a 9-ball, 1.65 mm × 1.87 mm
WLCSP ratedfor a −40°C to +125°C junctiontemperature range.
Rev. B
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility isassumedby AnalogDevicesforits use,norforany infringements of patents orother
rights of thirdparties thatmay resultfrom its use.Specificationssubjecttochangewithoutnotice.No
license is granted by implicationor otherwise underany patentorpatentrights of AnalogDevices .
Trademarks andregistered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2015–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
Parameter
SW PIN
High-Side Power FET On Resistance
Low-Side Power FET On Resistance
Current-Limit in PWM Mode
Peak Current in Hysteresis Mode
Minimum On Time
VOUTOK PIN
Monitor Threshold
Monitor Hysteresis
Monitor Rising Delay
Monitor Falling Delay
Leakage Current
Output Low Voltage
SOFT START
Default Soft Start Time
Start-Up Delay
COUT DISCHARGE SWITCH ON RESISTANCE
THERMAL SHUTDOWN
Threshold
Hysteresis
ADP5301
Symbol
Min Typ Max Unit Test Conditions/Comments
RDS (ON) H
RDS (ON) L
ILIM_PWM
ILIM_HYS
tMIN_ON
324 470 mΩ Pin to pin measurement
196 320 mΩ Pin to pin measurement
800 1000 1200 mA SYNC/MODE = high
265 mA SYNC/MODE = low
40 70
ns
VOUTOK (RISE)
VOUTOK (HYS)
tVOUTOK_RISE
tVOUTOK_FALL
IVOUTOK_LEAKAGE
VOUTOK_LOW
87
90 93
3
40
10
0.1 1
50 80
%
%
μs
μs
μA
mV IVOUTOK = 100 μA
tSS 350 μs Factory trim, 1 bit (350 μs and 2800 μs)
tSTART_DELAY
2
ms Delay from the EN pin being pulled high
RDIS 290 Ω
TSHDN
THYS
142 °C
127 °C
Rev. B | Page 5 of 21
5 Page 
Data Sheet
2.10
2.08
RISING
2.06
2.04
2.02
2.00 FALLING
1.98
1.96
–40
+25 +85
TEMPERATURE (°C)
+125
Figure 22. UVLO Threshold, Rising and Falling vs. Temperature
VOUT
1
SW
2
IL
4
CH1 100mV
CH2 2.00V
CH4 500mA Ω
M 200µs A CH4 140mA
T 39.60%
Figure 23. Steady Waveform of Hysteresis Mode, ILOAD = 1 mA
(IL is the Inductor Current)
VIN
3
VOUT
1
IL
4
SW
2
CH1 1.00V BW CH2 5.00V
M 200µs A CH1
CH3 2.00V BW CH4 500mA ΩBW T 50.60%
Figure 24. Soft Start, ILOAD = 300 mA
1.22V
ADP5301
2.3
–40ºC
2.2 +25ºC
+125ºC
2.1
2.0
1.9
1.8
1.7
2.3
2.9 3.5 4.1 4.7 5.3 5.9
VIN (V)
Figure 25. Switching Frequency vs. VIN
6.5
1
VOUT (AC)
IL
4
2
SW
CH1 10.0mV BW CH2 2.00V
M 400ns A CH2
CH4 200mA ΩBW T 90.60%
2.72V
Figure 26. Steady Waveform of PWM Mode, ILOAD = 300 mA
VIN
VOUT
1
IL
4
SW
2
CH1 500mV BW CH2 5.00V
M 100µs A CH1 1.05V
CH3 2.00V BW CH4 500mA ΩBW T 40.00%
Figure 27. Soft Start with Precharge Function
Rev. B | Page 11 of 21
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet ADP5301.PDF ] | |
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