PI5PD2556ZCEX [PERICOM]

Precision Adjustable Current -Limited Power Switch;
PI5PD2556ZCEX
型号: PI5PD2556ZCEX
厂家: PERICOM SEMICONDUCTOR CORPORATION    PERICOM SEMICONDUCTOR CORPORATION
描述:

Precision Adjustable Current -Limited Power Switch

文件: 总12页 (文件大小:897K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
PI5PD2556/2557  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Precision Adjustable Current -Limited Power Switch  
Features  
Description  
Meets USB Current-Limiting Requirement  
±6.5% Current-Limit Accuracy at 4.0A  
Adjustable Current Limit, 500mA-5A (typ.)  
Fast Over-current Response - 3.5μS (typ.)  
22mΩ High-Side MOSFET  
The PI5PD2556/2557 series is single-channel power-  
distribution switch intended for applications where  
precision current limiting is required or heavy capacitive  
loads and short circuits are encountered. These devices  
offer a programmable current-limit threshold between  
500 mA and 5A (typ) per channel via an external resistor.  
The power-switch rise and fall times are controlled to  
minimize current surges during turn on/off.  
Operating Range: 2.5 V to 5.5V  
2-μA Maximum Standby Supply Current  
Built-in Soft-Start  
15 kV / 8 kV System-Level ESD Capable  
Device Package: TDFN 3x3-8L  
UL Listed File No. E341484  
CB Certified  
Each channel of the PI5PD2556/2557 devices limits the  
output current to a safe level by switching into a  
constant-current mode when the output load exceeds the  
current-limit threshold.  
Applications  
Typical Application Circuit  
USB Ports/Hubs  
Digital TV  
IN  
IN  
OUT  
VIN  
Vout  
Cout  
Set-Top Boxes  
VOIP Phones  
R1  
Cin  
OUT  
ILIM  
100k  
0.1uF  
/FAULT  
EN  
/FAULT1 Signal  
Pin Configuration  
Radj  
Control Input  
GND  
1
GND  
8
7
6
5
FAULT  
OUT  
P ower Pa d  
2
3
4
IN  
IN  
OUT  
Figure 1 Typical Application Circuit  
ILIM  
/EN(EN)  
TDFN 3x3-8L (Top View)  
Pin Description  
Pin Name  
Pin No.  
Type  
Description  
PI5PD2556 PI5PD2557  
1
2, 3  
4
GND  
IN  
-
I
Ground.  
Power input voltage.  
Enable input, logic low turns on power switch for PI5PD2556, logic high  
turns on power switch for PI5PD2557.  
/EN  
EN  
I
External resistor used to set current-limit threshold; recommended 20 kΩ ≤  
RILIM ≤ 187 kΩ.  
5
ILIM  
OUT  
I
6, 7  
8
O
O
Power switch output for channel two  
Active-low open-drain output, asserted during over-current or over-  
temperature condition or reverse voltage occurs  
/FAULT  
2015-08-0011  
PT0497-4  
08/31/15  
1
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Maximum Ratings  
Note:  
o
o
1. Stresses greater than those listed under  
MAXIMUM RATINGS may cause permanent  
damage to the device. This is a stress rating only  
and functional operation of the device at these or  
any other conditions above those indicated in the  
operational sections of this specification is not  
implied. Exposure to absolute maximum rating  
conditions for extended periods may affect  
reliability.  
2. The JEDEC high-K (2s2p) board used to derive  
this data was a 3in × 3in, multilayer board with 1-  
ounce internal power and ground planes and 2-  
ounce copper traces on top and bottom of the board.  
StorageTemperature...................................................................................-65 Cto+150 C  
SupplyVoltage toGroundPotential............................................................-0.5Vto+6.0V  
DCInputVoltage......................................................................................-0.5VtoVDD+0.5V  
VoltagerangefromINtoOUT......................................................................-0.5Vto+6.0V  
ControlInputVoltage(VIN)...........................................................................-0.5Vto+6.0V  
(1)  
Continuoustotalpowerdissipation .......................................................................2400mW  
ContinuousFAULTsinkcurrent..................................................................................25mA  
PowerDissipation.............................................................................................................. 0.5W  
ESD:HBMMode...........................................................................................................4000V  
CDMMode..............................................................................................................500V  
ESD-systemlevel(contact/air)...............................................................................8kV/15kV  
Recommended operation conditions  
Symbol  
Parameter  
Conditions  
Min  
2.5  
0
Typ  
Max  
5.5  
5.5  
5.5  
-
Unit  
V
IN  
Input Voltage  
Input Voltage  
-
-
-
-
-
-
-
-
-
-
-
V
VEN  
PI5PD2556  
PI5PD2557  
V
V/EN  
0
V
IH  
High-level input voltage on EN  
Low-level input voltage on EN  
-
-
-
-
-
-
1.1  
-
V
V
V
IL  
0.66  
5
IOUT  
Continuous output current per channel, OUT  
Continuous /FAULT sink current  
Recommended resistor limit range  
Operating Temperature Range  
0
A
IFAULT  
-
10  
mA  
kΩ  
ºC  
R
ILIM  
20  
-40  
187  
85  
TA  
2015-08-0011  
PT0497-4  
08/31/15  
2
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
DC Electrical Characteristics  
VI(IN)= 5.0V; TA=-40°C to +85°C ; unless otherwise specified.  
Sym  
Description  
Test Conditions(1)  
Min  
Typ  
Max  
Unit  
Power Switch  
RDS(on)  
Static drain-source on-state resistance  
Rise time, output  
-
-
22  
35  
mΩ  
VI(IN) = 5.0V  
1
2
1
0.5  
0.4  
4
3
1.0  
0.6  
tr  
VI(IN) = 2.5V  
VI(IN) = 5.0V  
VI(IN) = 2.5V  
0.5  
0.3  
0.2  
CL = 1F,  
RL = 100Ω  
ms  
tf  
Fall time, output  
Enable EN  
VIH  
VIL  
ton  
High-level input voltage  
Low-level input voltage  
Turn on time  
2.5 V ≤ VI(IN) ≤ 5.5 V  
2.5 V ≤ VI(IN) ≤ 5.5 V  
1.1  
-
-
-
-
-
-
0.6  
5
V
ms  
CL = 1F, RL = 100Ω  
toff  
Turn off time  
-
-
2
Current Limit  
RILIM=27.4 kΩ  
RILIM=61.9kΩ  
3750  
1590  
4040  
1785  
4260  
1960  
Current-limit threshold @ VOUT = VIN * 0.8  
IOS  
RILIM=100kΩ  
935  
1100  
1260  
VIN = 5 V, current ramp  
(100 A/s) on OUT  
RILIM=27.4kΩ  
VIN = 5 V, current ramp  
(100 A/s) on OUT  
RILIM=100kΩ  
mA  
s  
3800  
4500  
5000  
Overcurrent trip threshold  
IOC_TRIP  
950  
-
1250  
3.5  
1500  
-
tIOS  
Response time to short circuit  
VIN = 5.0V  
Supply Current  
No load on OUT, VEN=disable  
TA =25°C  
ISTB  
Input supply current at output disable  
-
0.1  
2
No load on OUT,  
VEN=5.0V ,  
TA=25°C  
RILIM=24.9kΩ  
-
-
-
95  
85  
120  
110  
1.0  
A  
ISS  
Input supply current at output enable  
Reverse Leakage Current  
RILIM=100kΩ  
IREV  
0.01  
VOUTx=5.5V, VIN=0VTA=25°C  
Under Voltage Lockout  
UVLO Low-level input voltage  
Hysteresis for low-level input voltage  
/FAULT FLAG  
VIN Rising  
TA=25°C  
-
-
2.35  
35  
2.45  
-
V
mV  
VOL  
IOFF  
Output low voltage  
I/FAULT =1mA  
V/FAULT =5.5V  
-
-
-
-
180  
1
mV  
Off-state leakage  
/FAULT deglitch  
A  
FAULT assertion or de-assertion  
due to over-current condition  
TD  
4
9
15  
ms  
Thermal Shutdown  
-
-
-
-
-
-
155  
135  
20  
-
-
-
OTSD2  
OTSD  
Thermal shutdown threshold  
Thermal shutdown threshold in current-  
limit  
°C  
Hysteresis  
Note:  
Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account  
separately.  
2015-08-0011  
PT0497-4  
08/31/15  
3
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Parameter Measurement information  
Figure 2 Test Circuit and Voltage Waveforms  
IN  
IN  
OUT  
V
VIN
Vout  
Cout  
R1  
Cin  
0.1uF  
OUT  
ILIM  
100k  
/FAULT  
EN  
/FAULT1 Signal  
RLIM=24.9kohm  
Control Input  
GND  
P ower Pa d  
Figure 3 Typical Characteristics Reference Schematic  
2015-08-0011  
PT0497-4  
08/31/15  
4
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Typical characteristic  
VOUT  
2V/div  
VOUT  
2V/div  
VEN  
5V/div  
VEN  
5V/div  
IIN  
2A/div  
IIN  
2A/div  
t - Time - 2 mS/div  
t - Time - 2 mS/div  
Figure 3 Turn-on Delay and Rise Time  
Figure 4 Turn-off Delay and Fall Time  
VOUT  
2V/div  
VEN  
5V/div  
VFAULT  
5V/div  
VFAULT  
5V/div  
IIN  
5A/div  
IIN  
2AV/div  
t - Time - 2 mS/div  
t - Time - 4 mS/div  
Figure 5 Device Enabled into Short-Circuit  
Figure 6 Full-Load to Short-Circuit Transient Response  
VOUT  
5V/div  
VFAULT  
5V/div  
IIN  
5A/div  
t - Time - 10 ms/div  
Figure 7 Short-Circuit to Full-Load Recovery Response  
2015-08-0011  
PT0497-4  
08/31/15  
5
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Figure 8 IIN & Junction Temperature, Output Disabled  
Figure 9 IIN & Junction Temperature , Output Enabled  
Figure 10 IIN & VIN Supply Voltage  
Figure 11 MOSFET Ron & Junction Temperature  
-40°C  
25°C  
125°C  
RLIM = 100kohm  
VIN-VOUT mV/div  
Figure 12 UVLO Under voltage Lockout V  
Figure 13 Switch Current Vs. Drain-Source Voltage Across  
2015-08-0011  
PT0497-4  
08/31/15  
6
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
-40°C  
25°C  
125°  
RLIM =61.9 kohm  
VIN-VOUT mV/div  
Figure 14 Switch Current Vs. Drain-Source Voltage Across  
Functional Block Diagram  
Figure 15 Functional Block Diagram  
Functional Description  
Overview  
The PI5PD2556/2557 is a single-channel, current-limited power-distribution switch using N-channel MOSFETs for applications  
where short circuits or heavy capacitive loads will be encountered. This device allows the user to program the current-limit  
threshold between 500 mA and 5.0 A (typ) via an external resistor. This device incorporates an internal charge pump and gate  
drive circuitry necessary to drive the N-channel MOSFETs. The charge pump supplies power to the driver circuit for each channel  
and provides the necessary voltage to pull the gate of the MOSFET above the source. The charge pump operates from input  
voltages as low as 2.5 V and requires little supply current. The driver controls the gate voltage of the power switch. The driver  
incorporates circuitry that controls the rise and fall times of the output voltage to limit large current and voltage surges and  
provides built-in soft-start functionality. The PI5PD2556/2557 limits the output current to the programmed current-limit threshold  
IOS during an over-current or short-circuit event by reducing the charge pump voltage driving the N-channel MOSFET and  
operating it in the linear range of operation. The result of limiting the output current to IOS reduces the output voltage at OUT  
because the N-channel MOSFET is no longer fully enhanced.  
2015-08-0011  
PT0497-4  
08/31/15  
7
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Over-current Conditions  
When an over-current condition is detected, the device maintains a constant output current and reduces the output voltage  
accordingly.  
The PI5PD2556/2557 thermal cycles if an overload condition is present long enough to activate thermal limiting in any of the  
above cases. The device turns off when the junction temperature exceeds 135°C (min) while in current limit. The device remains  
off until the junction temperature cools 20°C (typ) and then restarts. The PI5PD2556/2557 cycles on/off until the overload is  
removed.  
/FAULT Response  
The FAULT open-drain outputs are asserted (active low) during an over-current or over-temperature condition. The  
PI5PD2556/2557 asserts the FAULTx signal until the fault condition is removed and the device resumes normal operation. The  
PI5PD2556/2557 is designed to eliminate false FAULT reporting by using an internal delay "deglitch" circuit (9-ms typ) for over-  
current conditions without the need for external circuitry. This ensures that FAULT is not accidentally asserted due to normal  
operation such as starting into a heavy capacitive load. The deglitch circuitry delays entering and leaving current-limited induced  
fault conditions. The FAULT signal is not deglitched when the MOSFET is disabled due to an over-temperature condition but is  
deglitched after the device has cooled and begins to turn on. This unidrectional deglitch prevents FAULT oscillation during an  
over-temperature event.  
Under-voltage Lockout (UVLO)  
The under-voltage lockout (UVLO) circuit disables the power switch until the input voltage reaches the UVLO turn-on threshold.  
Built-in hysteresis prevents unwanted on/off cycling due to input voltage droop during turn on.  
Enable (EN OR /EN)  
The logic enables control the power switches and device supply current. The supply current is reduced to less than 2-μA when a  
logic high is present on /EN or when a logic low is present on EN. A logic low input on /EN or a logic high input on EN enables  
the driver, control circuits, and power switches. The enable inputs are compatible with both TTL and CMOS logic levels.  
Thermal Sense  
The PI5PD2556/2557 self protects by using two independent thermal sensing circuits that monitor the operating temperature of the  
power switch and disable operation if the temperature exceeds recommended operating conditions. The PI5PD2556/2557 operates  
in constant-current mode during an over-current condition, which increases the voltage drop across the power switch. The power  
dissipation in the package is proportional to the voltage drop across the power switch, which increases the junction temperature  
during an over-current condition. The first thermal sensor (OTSD) turns off the power switch when the die temperature exceeds  
135°C (min) and the chip is in current limit. Hysteresis is built into the thermal sensor, and the switch turns on after the device has  
cooled approximately 20°C.  
The PI5PD2556/2557 also has a second ambient thermal sensor (OTSD2). The ambient thermal sensor turns off power switch  
when the die temperature exceeds 155°C (min) regardless of whether the power switch are in current limit and will turn on the  
power switches after the device has cooled approximately 20°C. The PI5PD2556/2557 continues to cycle off and on until the fault  
is removed.  
2015-08-0011  
PT0497-4  
08/31/15  
8
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Application Information  
Input and Output Capacitance  
Input and output capacitance improves the performance of the device; the actual capacitance should be optimized for the particular  
application. For all applications, a 0.1uF or greater ceramic bypass capacitor between IN and GND is recommended as close to the  
device as possible for local noise decoupling. This precaution reduces ringing on the input due to power-supply transients.  
Additional input capacitance may be needed on the input to reduce voltage overshoot from exceeding the absolute-maximum  
voltage of the device during heavy transient conditions or output shorting. This is especially important during bench testing when  
long inductive cables are used to connect the evaluation board to the bench power supply. Normally suggested the distance  
between IC and DC supply source is less than 15cm.  
Output capacitance also need to be close to IC as possible. When large transient currents are expected on the output , placing a  
high-value electrolytic capacitor on the output pin is recommended.  
Programming the Current-Limit Threshold  
The overcurrent threshold is user programmable via an external resistor. The PI5PD2556/57 uses an internal regulation loop to  
provide a regulated voltage on the ILIM pin. The current-limit threshold is proportional to the current sourced out of ILIM. The  
recommended 1% resistor range for RILIM is 20 kΩ ≤ RILIM 187 kΩ to ensure stability of the internal regulation loop.  
Many applications require that the minimum current limit is above a certain current level or that the maximum current limit is  
below a certain current level, so it is important to consider the tolerance of the overcurrent threshold when selecting a value for  
RILIM. The following equations approximate the resulting overcurrent threshold for a given external resistor value ®ILIM).  
Consult the Electrical Characteristics table for specific current limit settings. The traces routing the RILIM resistor to the  
PI5PD2556/57 should be as short as possible to reduce parasitic effects on the current-limit accuracy.  
Figure 16 Current Limit Threshold & RILIM  
Application 1: Designing above a Minimum Current Limit  
Some applications require that current limiting cannot occur below a certain threshold. For this example, assume  
that 3 A must be delivered to the load so that the minimum desired current-limit threshold is 3000 mA. Use the  
IOS equations and Figure 7 to select RILIM.  
2015-08-0011  
PT0497-4  
08/31/15  
9
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Select the closest 1% resistor less than the calculated value: RILIM = 33.2 kΩ. This sets the minimum current-limit  
threshold at 3000 mA . Use the IOS equations, Figure 7, and the previously calculated value for RILIM to  
calculate the maximum resulting current-limit threshold.  
The resulting maximum current-limit threshold is 3592 mA with a 33.2 kΩ resistor.  
Application 2: Designing Below a Maximum Current Limit  
Some applications require that current limiting must occur below a certain threshold. For this example, assume  
that the desired upper current-limit threshold must be below 5000 mA to protect an up-stream power supply. Use  
the IOS equations and Figure 7 to select RILIM.  
Select the closest 1% resistor greater than the calculated value: RILIM = 23.7kΩ. This sets the maximum  
current-limit threshold at 5000 mA . Use the IOS equations, Figure 7, and the previously calculated value for  
RILIM to calculate the minimum resulting current-limit threshold.  
The resulting minimum current-limit threshold is 4316 mA with a 23.7 kΩ resistor  
Accounting For resistor Tolerance  
The previous sections described the selection of RILIM given certain application requirements and the importance of  
understanding the current-limit threshold tolerance. The analysis focused only on the PI5PD2556/57 performance and assumed an  
exact resistor value. However, resistors sold in quantity are not exact and are bounded by an upper and lower tolerance centered  
around a nominal resistance. The additional RILIM resistance tolerance directly affects the current-limit threshold accuracy at a  
system level. The following table shows a process that accounts for worst-case resistor tolerance assuming 1% resistor values.  
Step one follows the selection process outlined in the application examples above. Step two determines the upper and lower  
resistance bounds of the selected resistor. Step three uses the upper and lower resistor bounds in the IOS equations to calculate the  
threshold limits. It is important to use tighter tolerance resistors, e.g. 0.5% or 0.1%, when precision current limiting is desired.  
Table 1. Common RILIM Resistor Selections  
Desired Nominal  
Current Limit (mA) Resistor  
Ideal  
Closet 1%  
Resistor  
(kΩ)  
Resistor Tolerance  
Actual Limits  
Ios Min  
(mA)  
605  
Ios Nor  
(mA)  
749  
1002  
1244  
1508  
1742  
2012  
2269  
Ios Max  
(mA)  
886  
1166  
1430  
1725  
1965  
2252  
2523  
1% Low (kΩ) 1% High(kΩ)  
(kΩ)  
750  
146.9  
110.2  
88.2  
73.6  
63.1  
55.2  
49.1  
147  
110  
145.5  
108.9  
87.8  
72.5  
62.8  
54.4  
48.2  
148.5  
111.1  
89.6  
73.9  
64  
1000  
1250  
1500  
1750  
2000  
2250  
825  
88.7  
73.2  
63.4  
54.9  
48.7  
1039  
1276  
1489  
1737  
1975  
55.4  
49.2  
2015-08-0011  
PT0497-4  
08/31/15  
10  
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
2500  
2750  
3000  
3250  
3500  
3750  
4000  
4250  
4500  
4750  
5000  
5250  
5500  
44.2  
40.2  
36.9  
34  
31.6  
29.5  
27.7  
26.0  
24.6  
23.3  
22.1  
21.1  
20.1  
44.2  
40.2  
36.5  
34  
31.6  
29.4  
27.4  
26.1  
24.9  
23.2  
22.1  
21  
43.8  
39.8  
36.1  
33.7  
31.3  
29.1  
27.1  
25.8  
24.7  
23  
44.6  
40.6  
36.9  
34.3  
31.9  
29.7  
27.7  
26.4  
25.1  
23.4  
22.3  
21.2  
20.2  
2191  
2425  
2689  
2901  
3138  
3390  
3656  
3851  
4050  
4369  
4602  
4861  
5121  
2501  
2750  
3030  
3253  
3501  
3764  
4039  
4241  
4446  
4773  
5011  
5274  
5539  
2765  
3025  
3315  
3545  
3800  
4068  
4349  
4554  
4761  
5091  
5331  
5595  
5859  
21.9  
20.8  
19.8  
20  
2015-08-0011  
PT0497-4  
08/31/15  
11  
PI5PD2556/2557  
Precision Adjustable  
Current-Limited Power Switch  
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||  
Mechanical Information  
TDFN 3.0x3.0-8L  
Ordering Information  
Part No.  
Package Code  
Package  
Lead free and Green 8-pin TDFN3.0x3.0  
Tape & reel  
PI5PD2556ZCEX  
PI5PD2557ZCEX  
ZC  
ZC  
Lead free and Green 8-pin TDFN3.0x3.0  
Tape & reel  
Note:  
E = Pb-free and Green  
Adding X Suffix= Tape/Reel  
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com  
Pericom reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply  
the best possible product. Pericom does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom product. The  
company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom.  
2015-08-0011  
PT0497-4  
08/31/15  
12  

相关型号:

PI5PD2557

Precision Adjustable Current -Limited Power Switch
PERICOM

PI5PD2557ZCEX

Precision Adjustable Current -Limited Power Switch
PERICOM

PI5PD2560

Dual Channel, Adjustable Current -Limited Power Switch
PERICOM

PI5PD2560ZEEX

Dual Channel, Adjustable Current -Limited Power Switch
PERICOM

PI5PD2561

Dual Channel, Adjustable Current -Limited Power Switch
PERICOM

PI5PD2561ZEEX

Dual Channel, Adjustable Current -Limited Power Switch
PERICOM

PI5USB1457AZAEX

Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 2 X 2 MM, 0.75 MM HEIGHT, GREEN, MO-229, TDFN-8
DIODES

PI5USB1457BZAE

Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 2 X 2 MM, 0.75 MM HEIGHT, GREEN, MO-229, TDFN-8
DIODES

PI5USB1457BZAEX

Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 2 X 2 MM, 0.75 MM HEIGHT, GREEN, MO-229, TDFN-8
DIODES

PI5USB1458

USB Host Charger Controller supporting BC1.2, YD/T-1591, & Non-standard Protocols
PERICOM

PI5USB1458AZAE

USB Host Charger Controller supporting BC1.2, YD/T-1591, & Non-standard Protocols
PERICOM

PI5USB1458ZAE

USB Host Charger Controller supporting BC1.2, YD/T-1591, & Non-standard Protocols
PERICOM