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PDF APL3517B Data sheet ( Hoja de datos )
| Número de pieza | APL3517B | |
| Descripción | (APL3517/A/B) Small Package 100mA Power-Distribution Switches | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APL3517/A/B
Compact, Small Package 100mA Power-Distribution Switches
Features
General Description
• High Side N-MOSFET with Internal Charge Pump
• 0.1A Continuous Current
• Built-in Soft-Start
• Wide Supply Voltage Range
• Current-Limit Protection
• Input Voltage Under Voltage Lockout Protection
• Reverse Current Blocking when Switch Disabled
• Output OVP Protection
• Reverse Current-Limit Protection
• Output Discharge
• Over-Temperature Protection
• UL Approved-File No.E328191
• Nemko IEC 60950-1 : 2005(2nd Edition);
Am 1:2009 CB; EN60950-1:2006; A11: 2009; A1:
2010 Scheme Certified, No 65711
• Lead Free and Green Devices Available (RoHS
Compliant)
Applications
• HDMI Port Protection Switches
• Bluetooth Protection Switches
• High-side Power Protection Switches
Simplified Application Circuit
VIN VOUT
APL3517
The APL3517/A/B is a power-distribution switch with cur-
rent- limiting function and output OVP protections that can
deliver current up to 0.1A. The device incorporates a
250mΩ N-channel MOSFET power switch.
The device integrates some protection features, includ-
ing current-limit protection, output over-voltage protection,
over-temperature protection and UVLO. The current-limit
protection can protect down-stream devices from cata-
strophic failure by limiting the output current at current-
limit threshold during over-load or short-circuit events.
The output over-voltage protection can prevent current
flowing from VOUT to VIN when an abnormally high volt-
age exists in VOUT. The over-temperature protection func-
tion shuts down the N-channel MOSFET power switch
when the junction temperature rises beyond 140oC and
will automatically turns on the power switch when the
temperature drops by 20oC. The UVLO function keeps
the power switch in off state until there is a valid input
voltage present.
The device is available in lead free SOT-23-3 and
SOT-23-5 packages.
Pin Configuration
GND 1
VOUT 2
APL3517
SOT-23-3
3 VIN
GND
VIN VOUT
GND 1
EN 2
VOUT 3
5 NC
4 VIN
APL3517A
SOT-23-5
APL3517A/B
EN/ENB
GND 1
ENB 2
VOUT 3
5 NC
4 VIN
GND
APL3517B
SOT-23-5
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Apr., 2012
1
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
1 page  
APL3517/A/B
Typical Operating Characteristics
UVLO Threshold Voltage vs .
Junction Temperature
2.65
2.60
2.55
VIN Increasing
2.50
2.45
2.40
VIN Decreasing
2.35
Junction Temperature, TJ (oC)
Switch On Resistance vs.
Junction Temperature
330
310
VIN = 5V
IOUT = 100mA
290
270
250
230
210
Junction Temperature, TJ (oC)
Current Limit Threshold vs .
Junction Temperature
500
V IN = 5 V
450
400
350
300
250
200
Junction Temperature, TJ (oC)
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Apr., 2012
5
Supply Current vs.
Junction Temperature
160
VIN = 5V
150
140
130
120
110
100
Junction Temperature, TJ (oC)
Switch On Resistance vs.
Input Voltage
300
290
IOUT = 100mA
TJ = 25 oC
280
270
260
250
240
230
220
210
200
2.5 3.0 3.5
4.0 4.5
5.0
Input Voltage, VIN (V)
Current Limit Threshold vs .
Input Voltage
500
450
400
350
300
250
200
2.5
3.0 3.5 4.0 4.5
Input Voltage, VIN (V)
5.0
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
5 Page 
APL3517/A/B
Function Description
VIN Under-voltage Lockout (UVLO)
The APL3517/A/B power switch has a built-in under-volt-
age lockout circuit to keep the output shut off until internal
circuitry is operating properly. The UVLO circuit has hys-
teresis and a de-glitch feature so that it will typically ig-
nore undershoot transients on the input. When input volt-
age exceeds the UVLO threshold, the output voltage starts
a soft-start to reduce the inrush current.
Power Switch
The power switch is an N-channel MOSFET with a low
RDS(ON). The internal power MOSFET does not have the
body diode. When IC is in UVLO state, the MOSFET pre-
vents a current flowing from the VOUT back to VIN and
VIN to VOUT.
Current-Limit Protection
The APL3517/A/B power switch provides the current-limit
protection function. During current-limit, the devices limit
output current at current-limit threshold. For reliable
operation, the device should not be operated in current-
limit for extended period time.
Soft-Start
The APLA3517/A/B has a built-in output soft-start control
to limit the current surge during start-up. The soft-start
interval is 2.5ms.
Output Discharge
When the input voltage is under VIN UVLO Threshold or
V =Low or V =High, the output discharge device is
EN ENB
turned on to discharge the output voltage.
Enable/Disable (SOT-23-5)
Pulling the ENB above 2V or EN below 0.8V will disable
the device, and pulling ENB pin below 0.8V or EN above
2V will enable the device.
When the IC is disabled the supply current is reduced to
less than 1µA. The enable input is compatible with both
TTL and CMOS logic levels. The EN/ENB pins cannot be
left floating.
Over-temperature Protection
When the junction temperature exceeds 140oC, the inter-
nal thermal sense circuit turns off the power FET and
allows the device to cool down. When the device’s junc-
tion temperature cools by 20oC, the internal thermal sense
circuit will enable the device, resulting in a pulsed output
during continuous thermal protection. Thermal protec-
tion is designed to protect the IC in the event of over-
temperature conditions. For normal operation, the junc-
tion temperature cannot exceed TJ=+125oC.
Output Over-Voltage Protection
The output over-voltage protection is implemented by 2
either sensing mechanisms. One is by sensing when
VOUT voltage is above VOVP threshold, the internal power
MOSFET is turned off. The other is by sensing when re-
verse current, flowing from VOUT to VIN, surpasses IRV.
When the reverse current reachers the reverse current
Blocking threshold, the device limits the reveres current
at IRV threshold level. When the reverse current fault ex-
ists for more than 0.7ms, the internal power MOSFET is
turned off. The internal power MOSFET is allowed to turn-
on once the output voltage gose below VIN-1V.
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Apr., 2012
11
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet APL3517B.PDF ] | |
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