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PDF NX5P2553 Data sheet ( Hoja de datos )
| Número de pieza | NX5P2553 | |
| Descripción | Precision adjustable current-limited power switch | |
| Fabricantes | NXP Semiconductors | |
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NX5P2553
Precision adjustable current-limited power switch
Rev. 1 — 6 July 2015
Product data sheet
1. General description
The NX5P2553 is a precision adjustable current-limited power switch. The device
includes undervoltage lockout, overtemperature, and reverse bias protection circuits
designed to isolate the switch terminals when a fault condition occurs. It also has an
overcurrent protection circuit to limit the output current. The device features two power
switch terminals, one input (VIN), and one output (VOUT). It also consists of a current limit
input (ILIM) for defining the overcurrent limit, an open-drain fault output (FAULT) to
indicate when a fault condition has occurred, and an enable input (EN) to control the state
of the switch.
The overcurrent limit threshold can be programmed between 85 mA and 1.8 A using an
external resistor between the ILIM and GND pins. The device has built-in soft-start. This
feature controls the output rise time by minimizing current surges when the switch is
enabled.
Designed for operation from 2.5 V to 5.5 V, it is used in power domain isolation
applications to protect from out of range operation. The enable input includes integrated
logic level translation making the device compatible with lower voltage processors and
controllers.
2. Features and benefits
Wide supply voltage range from 2.5 V to 5.5 V
ISW maximum 1.5 A continuous current
6 % current-limit accuracy at 1.8 A (typical)
Meets USB current-limiting requirements
Adjustable current limit from 85 mA to 1800 mA (typical)
Constant current mode in overcurrent situation
Overtemperature protection
Very low ON resistance: 95 m (typical) for TSOP6 package
Fast short-circuit switch-off response (2.0 s typical)
ILIM short detection
Reverse input-output voltage protection
Built-in soft-start
ESD protection:
HBM ANSI/ESDA/JEDEC JS-001-2012 Class 2 exceeds 2000 V
CDM JESD22-C101D exceeds 500 V
IEC61000-4-2 contact discharge exceeds 8 kV for VOUT (with external
capacitance)
Specified from 40 C to +85 C ambient temperature
1 page  
NXP Semiconductors
NX5P2553
Precision adjustable current-limited power switch
8.6 FAULT output
The FAULT pin is an open-drain output that requires an external pull-up resistor. If any of
the protection circuits are activated, FAULT is set to LOW to indicate that a fault has
occurred. It returns to the high-impedance state automatically once the fault condition is
removed.
8.7 OverTemperature Protection (OTP)
If the device temperature exceeds 155 C when EN is set HIGH and the device is not in
current limit, OTP triggers. It disables the N-channel MOSFET and sets the FAULT pin to
LOW. Any transition on the EN pin has no effect. Once the device temperature decreases
below 125 C, the device returns to the defined state.
If the device temperature exceeds 130 C when EN is set HIGH and the device is in
current limit, OTP triggers. It disables the N-channel MOSFET and sets the FAULT pin to
LOW. Any transition on the EN pin has no effect. Once the device temperature decreases
below 118 C, the device returns to the defined state.
9. Limiting values
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
Min Max Unit
VI input voltage
inputs EN and ILIM
input VIN
[1] 0.35
[2] 0.35
+6.5
+6.5
V
V
VO output voltage
output FAULT
output VOUT
[1] 0.35
[2] 0.35
VI(VIN)
+6.5
V
V
VSW
IIK
Isource
IOK
ISK
ISW
Tj(max)
switch voltage
input clamping current
source current
input EN; VI(EN) < 0.35 V
input ILIM; VI(ILIM) < 0.35 V
input ILIM
output clamping current
switch clamping current
switch current
maximum junction
temperature
VO < 0 V
input VIN; VI(VIN) < 0.35 V
output VOUT; VO(VOUT) < 0.35 V
VSW > 0.35 V
[2] 6.5
50
50
-
50
50
50
[3] -
40
+6.5
-
-
1
-
-
-
1900
+150
V
mA
mA
mA
mA
mA
mA
mA
C
Tstg storage temperature
Ptot total power dissipation NX5P2553GV
NX5P2553GU
65
[4] -
[4] -
+150
300
315
C
mW
mW
NX5P2553GU6
[4] -
340 mW
[1] If the input current rating is observed, the minimum input voltage rating may be exceeded.
[2] If the switch clamping current rating is observed, the minimum and maximum switch voltage ratings may be exceeded.
[3] Internally limited.
[4] The (absolute) maximum power dissipation depends on the junction temperature Tj. Higher power dissipation is allowed with lower
ambient temperatures. The conditions to determine the specified values are Tamb = 85 C and the use of a two layer PCB.
NX5P2553
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 6 July 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
5 of 24
5 Page 
NXP Semiconductors
NX5P2553
Precision adjustable current-limited power switch
Table 12. Characteristics …continued
At recommended operating conditions; VI(VIN) = VI(EN) and RFAULT = 10 k unless otherwise specified; voltages are referenced
to GND (ground = 0 V); see Figure 9, Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, and
Figure 22.
Symbol
Parameter
Conditions
Min
Typ[1]
Max
Unit
toff turn-off time
short-circuit;
VI(VIN) = 5 V
- 2 - s
RVP; VI(VIN) = 5 V 3 5 7 ms
tdegl deglitch time
FAULT; OCP;
VI(VIN) = 5 V
5
8.7 12
ms
FAULT; RVP;
VI(VIN) = 5 V
2 4.4 6 ms
[1] Typical values are measured at Tj = 25 C.
[2] ten is the same as tPZH.
[3] tdis is the same as tPHZ.
13.1 Waveform and test circuits
EN input
VI
GND
VOH
VOUT output
GND
VM
tPZH
VX
tTLH
tPHZ
VY
tTHL
Fig 9.
Measurement points are given in Table 13.
Logic level: VOH is the typical output voltage that occurs with the output load.
Switching times and rise and fall times
Table 13. Measurement points
Supply voltage
VI(VIN)
2.5 V
5.5 V
EN input
VM
0.5 VI(EN)
0.5 VI(EN)
Output
VX
0.9 VOH
0.9 VOH
aaa-011076
VY
0.1 VOH
0.1 VOH
NX5P2553
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 6 July 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
11 of 24
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