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PDF ADP196 Data sheet ( Hoja de datos )
| Número de pieza | ADP196 | |
| Descripción | High-Side Power Switch | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
FEATURES
Low RDSON: 10 mΩ (WLCSP) or 27 mΩ (LFCSP)
Wide input voltage range: 1.8 V to 5.5 V
Quick output discharge (QOD) circuit (ADP196-01)
3 A continuous operating current to 70°C
1.2 V logic-compatible enable input
Low 25 μA quiescent current, VIN = 1.8 V
Low 40 μA quiescent current, VIN = 5.5 V
Overtemperature and overcurrent protection
Ultralow shutdown current: <1 μA
Ultrasmall 1.0 mm × 1.5 mm, 0.5 mm pitch, 6-ball WLCSP
Tiny 2.0 mm × 2.0 mm × 0.55 mm, 0.65 mm pitch, 6-lead LFCSP
5 V, 3 A, Logic Controlled
High-Side Power Switch
ADP196
TYPICAL APPLICATION CIRCUIT
VIN VOUT
+
–
GND
ON
EN OFF
CHARGE PUMP
OVERCURRENT
AND SLEW RATE
CONTROL
LOAD
OVERTEMPERATURE
PROTECTION
ADP196
Figure 1.
APPLICATIONS
Mobile phones
Digital cameras and audio devices
Portable and battery-powered equipment
GENERAL DESCRIPTION
The ADP196 is a high-side load switch designed for operation
from 1.8 V to 5.5 V. This load switch provides power domain
isolation, helping to extend battery operation. The device contains
a low on-resistance, N-channel MOSFET that supports more
than 3 A of continuous current and minimizes power loss. In
addition, RDSON is constant, independent of the VIN voltage.
The low 25 μA quiescent current and ultralow shutdown current
make the ADP196 ideal for battery-powered portable equipment.
The built-in level shifter for enable logic makes the ADP196
compatible with many processors and GPIO controllers.
Overtemperature protection circuitry is activated if the junction
temperature exceeds 125°C, thereby protecting the ADP196 and
downstream circuits from potential damage. Overcurrent pro-
tection is provided in the form of constant current limiting.
The ADP196-01 incorporates an internal quick output discharge
circuit to discharge the output capacitance when the ADP196-01
http://www.DataSheet4U.net/
output is disabled.
The ADP196 in the WLCSP package occupies minimal printed
circuit board (PCB) area with a footprint of less than 1.5 mm2
and a height of 0.60 mm.
The ADP196 is available in an ultrasmall, 1.0 mm × 1.5 mm,
0.5 mm pitch, 6-ball WLCSP and a 2.0 mm × 2.0 mm × 0.55 mm,
0.65 mm pitch, 6-lead LFCSP.
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
datasheet pdf - http://www.DataSheet4U.net/
1 page  
Data Sheet
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
1
A VIN
2
VOUT
ADP196
B VIN
VOUT
C EN
GND
ADP196
TOP VIEW
(Not to Scale)
Figure 3. 6-Ball WLCSP Pin Configuration
Table 4. 6-Ball WLCSP Pin Function Descriptions
Pin No.
Mnemonic Description
A1, B1
VIN Input Voltage.
A2, B2
VOUT
Output Voltage.
C1 EN Enable Input. Drive EN high to turn on the switch, or drive EN low to turn off the switch.
C2 GND Ground.
VOUT1 1
VOUT2 2
GND 3
ADP196http://www.DataSheet4U.net/
TOP VIEW
6 VIN1
5 VIN2
4 EN
NOTES
1. EXPOSED PAD MUST BE CONNECTED
TO GROUND.
Figure 4. 6-Lead LFCSP Pin Configuration
Table 5. 6-Lead LFCSP Pin Function Descriptions
Pin No.
Mnemonic Description
1
VOUT1
Output Voltage. Connect VOUT1 and VOUT2 together.
2
VOUT2
Output Voltage. Connect VOUT1 and VOUT2 together.
3 GND Ground.
4 EN Enable Input. Drive EN high to turn on the switch, or drive EN low to turn off the switch.
5
VIN2
Input Voltage. Connect VIN1 and VIN2 together.
6
VIN1
Input Voltage. Connect VIN1 and VIN2 together.
EP The exposed pad must be connected to ground.
Rev. 0 | Page 5 of 12
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Data Sheet
ADP196
TIMING
Turn-on delay is defined as the interval between the time that
VEN exceeds the rising threshold voltage and when VOUT rises to
~10% of its final value. The ADP196 includes circuitry that has
a typical 2 ms turn-on delay and a controlled rise time to limit
the VIN inrush current. As shown in Figure 25 and Figure 26,
the turn-on delay is nearly independent of the input voltage.
T
The turn-off time is defined as the time it takes for the output
voltage to fall from 90% to 10% of VOUT reaching its final value.
The turn-off time is also dependent on the RC time constant
of the output capacitance and load resistance. Figure 27 shows
typical turn-off times with VIN = 1.8 V to 5 V, COUT = 47 μF, and
RLOAD = 330 Ω.
6.0
5.0
2
ENABLE
1
INPUT CURRENT
VOUT
4.0
3.0
2.0
1.0
VEN
VIN = 5.0V
VIN = 3.3V
VIN = 1.8V
3
CH1 20mAΩ BW CH2 1V BW M1ms
CH3 500mV BW
T 10.6%
A CH2 1.18V
Figure 25. Typical Turn-On Time and Inrush Current, VIN = 1.8 V,
COUT = 47 μF, 330 Ω Load
T
2
ENABLE
1
INPUT CURRENT
VOUT
3
CH1 20mAΩ BW
CH3 2V BW
CH2 1V BW
M1ms
T 10.6%
A CH2 1.18V
Figure 26. Typical Turn-On Time and Inrush Current, VIN = 5 V,
COUT = 47 μF, 330 Ω Load
The rise time is defined as the time it takes the output voltage
to rise from 10% to 90% of VOUT reaching its final value. The rise
time is dependent on the rise time of the internal charge pump.
For very large values of output capacitance, the RC time constant
(where C is the load capacitance, CLOAD, and R is the RDSON||RLOAD)
can become a factor in the rise time of the output voltage. Because
RDSON is much smaller than RLOAD, an adequate approximation
for RC is RDSON × CLOAD. An input or load capacitor is not required
for the ADP196; however, capacitors can be used to suppress noise
on the board.
0
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10
TIME (SEC)
Figure 27. Typical Turn-Off Time
CURRENT-LIMIT AND THERMAL OVERLOAD
PROTECTION
The ADP196 is protected against damage due to excessive power
dissipation by current-limit and thermal overload protection
circuits. The ADP196 is designed to limit current when the output
http://www.DataSheet4U.net/ load reaches 4 A (typical). When the output load exceeds 4 A,
the output voltage is reduced to maintain a constant current limit.
Thermal overload protection is included, which limits the junction
temperature to a maximum of 125°C (typical). Under extreme
conditions (that is, high ambient temperature and/or high power
dissipation) when the junction temperature starts to rise above
125°C, the output is turned off, reducing the output current to
zero. When the junction temperature falls below 110°C, the
output is turned on again, and the output current is restored to
its operating value.
Consider the case where a hard short from VOUT to ground
occurs. At first, the ADP196 current limits so that only 4 A is
conducted into the short. If self-heating of the junction is great
enough to cause its temperature to rise above 125°C, thermal
shutdown is activated, turning off the output and reducing the
output current to zero. As the junction temperature cools and
falls below 110°C, the output turns on and conducts 4 A into
the short, again causing the junction temperature to rise above
125°C. This thermal oscillation between 110°C and 125°C causes a
current oscillation between 4 A and 0 mA that continues as long
as the short remains at the output.
Current-limit and thermal overload protections are intended to
protect the device against accidental overload conditions. For
reliable operation, device power dissipation must be externally
limited so that the junction temperature does not exceed 125°C.
Rev. 0 | Page 11 of 12
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11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ADP196.PDF ] | |
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