R5523N_E/2006/05/12
USB HIGH-SIDE POWER SWITCH
R5523N SERIES
DESCRIPTION
The R5523N is CMOS-based high-side MOSFET switch IC for Universal Serial Bus (USB) applications. Low ON Resistance (Typ. 130mΩ) and low supply current (Typ. 20µA at active mode) are realized in this IC. An over-current limit circuit, a thermal shutdown circuit, and an under voltage lockout circuit are built-in as protection circuits. Further, a delay circuit for flag signal after detecting over-current, is embedded to prevent miss-operation of error flag because of inrush current. The R5523N is ideal for applications of protection for USB power supply. Since the package is small SOT23-5, high density mounting on board is possible.
FEATURES
• Built-in 130 mΩ (Typ.) P-channel MOSFET Switch • Low Supply Current Typ. 20µA (at Active Mode) • Output Current Min. 500mA/ Min. 250mA 2 types are available. • Flag Delay Time Typ. 10ms. • Over- Current Limit / Short Circuit Protection • Under Voltage Lockout • Thermal Shutdown Protection • Soft-start Function • SOT23-5 pin Package
APPLICATIONS
• USB Peripherals • Notebook PCs
1
R5523N
BLOCK DIAGRAM
IN OUT
EN
GATE CONTROL
CURRENT LIMIT FLAG DELAY
FLG
UVLO THERMAL SHUTDOWN
GND
SELECTION GUIDE
In the R5523N Series, output current and the logic of the enable pin can be designated. Part Number is designated as follows: R5523Nxxxx-TR ← Part Number ↑↑ ↑ abc Code a 001: 500mA 002: 250mA (Under development) Designation of the logic of the enable pin. b A: active with "L" B: active with "H" c Designation of the taping type. TR (Refer to the taping specifications.) Description Designation of the output current.
2
R5523N
PIN CONFIGURATION
SOT23-5
5
4
1
2
3
ABSOLUTE MAXIMUM RATINGS
Topt=25°C Symbol VIN VEN VFLG IFLG VOUT IOUT PD Topt Tstg Item Input Voltage Enable Pin Input Voltage Flag Voltage Flag Current Output Voltage Output Current Power Dissipation Operating Temperature Storage Temperature Ratings 6.5 -0.3 ~ VIN+0.3 -0.3 ~ 6.5 14 -0.3 ~ VIN+0.3 Unit V V V mA V
Internal Limited Internal Limited -40 ~ +85 -55 ~ +125 °C °C
ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are threshold limit values that must not be exceeded ever for an instant under any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply functional operation below these limits.
3
R5523N
PIN DESCRIPTION
Pin No. 1 2 3 4 5 Symbol EN GND FLG VIN VOUT description Enable Pin Ground Pin FLG pin (Open Drain Output) Power Supply Pin Output pin
ELECTRICAL CHARACTERISTICS
• R5523N001A/B Symbol VIN IDD1 IDD2 RON tON tOFF VUVLO VHYS ITH ILIM tFD TTS IEN VEN1 VEN2 ILO VLF IFOF Item Input Voltage Supply Current 1 Supply Current 2 Switch On Resistance Output Turn-on Delay Output Turn-off Delay UVLO Threshold UVLO Hysteresis Range Current Limit Threshold Short Current Limit Over Current Flag Delay Thermal Shutdown Temperature Threshold Enable Pin Input Current Enable Pin Input Voltage 1 Enable Pin Input Voltage 2 Output Leakage Current Flag "L" Output Voltage Flag Off Current ISINK = 1mA VFLAG = 5.5V 0.01 VEN = increasing VEN = decreasing 0.1 2.0 0.8 1.0 0.4 1.00 VOUT=0V From Over Current to FLG = "L" Tj =increasing Tj =decreasing 0.50 5 *Note1 VOUT = open (Note1) *Note2 OUT = open, (Note2) VIN = 5V, IOUT=500mA VIN = 5V, RL=60Ω VIN = 5V, RL=60Ω VIN = increasing VIN = decreasing 1.6 Conditions Min. 2.2 20 0.1 130 400 5 1.9 0.1 1.0 0.75 10 135 120 0.01 1.00 1.5 1.30 20 Typ. Topt=25°C Max. 5.5 45 1.0 180 Unit V µA µA mΩ µs µs V V A A ms °C µA V V µA V µA
4
R5523N
• R5523N002A/B Symbol VIN IDD1 IDD2 RON tON VUVLO ITH ILIM tFD TTS IEN VEN1 VEN2 ILO VLF IFOF Item Input Voltage Supply Current 1 Supply Current 2 Switch On Resistance Output Turn-on Delay UVLO Threshold Current Limit Threshold Short Current Limit Over Current Flag Delay Thermal Shutdown Temperature Threshold Enable Pin Input Current Enable Pin Input Voltage 1 Enable Pin Input Voltage 2 Output Leakage Current Flag "L" Output Voltage Flag Off Current ISINK = 1mA VFLAG = 5.5V 0.01 VEN = increasing VEN = decreasing 0.1 2.0 VOUT=0V From Over Current to FLG = "L" Tj =increasing Tj =decreasing 0.25 5 *Note1 VOUT = open (Note1) *Note2 OUT = open, (Note2) VIN = 5V, IOUT=500mA RL=60Ω VIN = increasing VIN = decreasing 1.6 Conditions Min. 2.2 20 0.1 130 400 1.9 1.8 0.50 0.35 10 135 120 0.01 Typ.
Topt=25°C Max. 5.5 45 1.0 180 Unit V µA µA mΩ µs V V 0.75 0.50 20 A A ms °C 1.00 µA V 0.8 1.0 0.4 1.00 V µA V µA
(Note1) EN=L (R5523NXXXA), EN=H (R5523NXXXB) (Note2) EN=H (R5523NXXXA), EN=L (R5523NXXXB)
5
R5523N
OPERATION
This explanation is based on the typical application. Over-current limit Function In case that OUT pin and GND is short, if over-current would continue, the temperature of the IC would increase drastically. If the temperature of the IC is equal or more than 135°C (Typ.), the switch transistor turns off because of thermal shutdown protection. In other words, when the temperature of the IC becomes equal or more than 135°C( Typ.), both the over-current limit circuit and thermal shutdown circuit work for the protection of the IC.
TEST CIRCUITS
(1) Supply Current Test Circuit
1 EN OUT 5
(2) Switch On Resistance Test Circuit
IOUT 1 EN OUT 5
VEN
2
GND
VEN
2
GND
V VON
3
FLG
IN
4
A
3
FLG
IN
4
0.1µF
VIN
0.1µF
VIN
(3) Output On Time Test Circuit
VOUT 1 EN OUT 5 10Ω
(4) Over-current Limit Test Circuit
IOUT 1 EN OUT 5 A
VEN
2
GND
VEN
2
GND
3
FLG
IN
4
3
FLG
IN
4
0.1µF
VIN
0.1µF
VIN
6
R5523N
(5) Over-current Threshold Test Circuit
IOUT 1 EN OUT 5
(6) Enable Input Voltage
100kΩ 1 EN OUT 5 V
VEN
2
GND
VEN
2
GND
VOUT
3
FLG
IN
4
3
FLG
IN
4
0.1µF
VIN
0.1µF
VIN
(7) Flag Output Delay Time Test
(8) UVLO Threshold Test
1
EN
OUT
5
1 EN OUT 5 100kΩ
VEN
2
GND
VEN 2 GND
V VOUT
3
FLG
IN
4
3 FLG IN 4
0.1µF 10kΩ
VIN
VIN
VFLG
0.1µF
TYPICAL APLICATION AND TECHNICAL NOTES
• R5523N00XX
10kΩ to100kΩ
VEN
EN
FLG
VIN
IN
R5523Nxxxx
OUT
VOUT
GND
0.1uF
• Put a capacitance range from 0.1µF to 1µF bypass capacitor between IN pin and GND pin of the IC.
7
R5523N
Without a bypass capacitor, in case of output short, because of the high side inductance of IN pin, the ringing may be generated and it might be a cause of an unstable operation. • Recommended pull-up resistance value range of flag pin is from 10kΩ to 100kΩ.
TIMING CHART
VEN
50%
50% tOFF
tON 90% VOUT 10% Output On Time/Output Off Time
tFD VEN 50%
VFLG 10% FLG Output Delay Time
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current
6.0
VIN=5.5V
2)
25 Supply Current IDD1[uA] 20 15 10 5 0
Supply Current vs. Temperature
5.0 Output Voltage VOUT(V) 4.0 3.0 2.0 1.0 0.0 0 200
VIN=2.2V
VIN=2.2V VIN=5.5V
400
600
800
1000
1200
-40
-20
Output Current IOUT(mA)
0 20 40 60 Temperature Topt [°C]
80
100
8
R5523N
3) Supply Current vs. Input Voltage
25 Supply Current I DD1 [uA] 20 15 10 5 0 2 2.5 3 3.5 4 4.5 Input Voltage VIN [V] 5 5.5
4)
180
On Resistance vs. Temperature
160 140 120 100 80 60 40 20 0 -40 -20 0 20 40 60 Temperature Topt [°C] 80 100 VIN=2.2V VIN=5.5V
85°C 25°C -40°C
5)
On Resistance vs. Input Voltage
180 Switch ON Resistance R ON [mΩ]
Switch ON Resistance R ON [mΩ]
6)
Output On Time vs. Temperature
1200
ON[us]
160 140 120 100 80 60 40 2 3 4 Input Voltage VIN [V] 5
1000 800 600 400 200 0 -40 -20 0 20 40 60
VIN=2.2V VIN=5.5V
85°C 25°C
-40°C
Output ON Time t
80
100
Temperature Topt[°C]
7)
Output On Time vs. Input Voltage
1200
8)
14 12 Output OFF Time tOFF[us] 10 8 6 4 2 0
Output Off Time vs. Temperature
ON[us]
1000 800 600
-40°C 25°C 85°C
VIN=2.2V VIN=5.5V
Output ON Time t
400 200 0 2 2.5 3 3.5 4 4.5 Input Voltage VIN[V] 5 5.5
-40
-20
0 20 40 60 Temperature Topt[°C]
80
100
9
R5523N
9) Output Off Time vs. Input Voltage
14
OFF[us]
10) Short-current Limit vs. Temperature
1000 Short Current Limit ILIM [mA] 900 800 700 600 500 400 300 200 100 0 -40 -20 0 20 40 60 Temperature Topt [°C] 80 100 VDD=2.2V VDD=5.5V
12 10 8 6 4 2 0 2 2.5 3 3.5 4 4.5 Input Voltage VIN[V] 5 5.5
Output OFF Time t
85°C 25°C -40°C
11) Short Current Limit vs. Input Voltage
Short Current Limit ILIM[mA] 1000 950 900 850 800 750 700 650 600 550 500 2.0 2.5
12) Over Current Threshold vs. Temperature
1500 1400 1300 1200 1100 1000 900 800 700 600 500 -40 -20 Over Current Threshold ITH(mA)
-40°C
VDD=2.2V VDD=5.5V
25°C 85°C
3.0 3.5 4.0 4.5 Input Voltage VIN [V]
5.0
5.5
0 20 40 60 Temperature Topt(°C)
80
100
13) Over Current Threshold vs. Input Voltage
1500 Over Current Threshold ITH(mA) 1400 1300 1200 1100 1000 900 800 700 600 500 2.0 2.5 3.0 3.5 4.0 4.5 Input Voltage VIN(V) 5.0 5.5
-40°C 25°C 85°C
14)
2.0 EN Threshold VEN1/VEN2[V] 1.6 1.2 0.8 0.4 0.0
Enable Input Voltage vs. Temperature
VIN=5.0V
VIH VIL
-40
-20
0 20 40 60 Temperature Topt[°C]
80
100
10
R5523N
15) Enable Input Voltage vs. VIN Input Voltage
2.0 EN Threshold Voltage VEN1/VEN2 [V] 1.6 1.2 0.8 0.4 0.0 2 2.5 3 3.5 4 4.5 Input Voltage VIN[V] 5 5.5 VIH VIL
Topt=25°C
16) Flag Output Delay Time vs. Temperature
20 FLG Output Delay Time tFD[ms] 18 16 14 12 10 8 6 4 2 0 -40 -20 0 20 40 60 Temperature Topt [°C] 80 100 VIN=2.2V VIN=5.5V
17) Flag Output Delay Time vs. VIN Input Voltage
20 FLG Output Delay Time tFD[ms] 18 16 14 12 10 8 6 4 2 0 2 2.5 3 3.5 4 4.5 Input Voltage VIN [V] 5 5.5 -40°C 25°C 85°C
18) UVLO Threshold vs. Temperature
2.2 UVLO Threshold VUVLO[V] 2.1 2.0 1.9 1.8 1.7 1.6 -40 -20 0 20 40 60 Temperature Topt[°C] 80 100 VIN decreasing VIN increasing
19) UVLO Characteristic at VIn increasing
VEN=0V, CL=47µF, RL=35Ω VIN (2V/div) VFLG (2V/div)
20) Turn on Response
VIN=5V, CL=47µF, RL=35Ω VEN (10V/div)
VFLG (5V/div) VOUT (2V/div) VOUT (5V/div)
IOUT (100mA/div) IOUT (200mA/div) 4ms/div 1ms/div
11
R5523N
21) Turn off Response
VIN=5V, CL=47µF, RL=35Ω
22) Inrush current
VIN=5V, RL=35Ω
VEN (10V/div)
VEN (10V/div)
VFLG (10V/div) VFLG (5V/div) CL=470μF CL=220μF VOUT (5V/div) CL=100μF IOUT (200mA/div) IOUT (200mA/div) 2ms/div CL=10μF 1ms/div
23) Current Limit Transient Response (Case: Enable to Short)
24) Thermal Shutdown Operation VIN=5V 2ms/div
VIN=5V, CL=47µF 100ms/div
VEN (5V/div)
VFLG (5V/div) VFLG (5V/div) 13.8ms VFLG (5V/div) VOUT (5V/div) IOUT (500mA/div) IOUT (500mA/div) IOUT (500mA/div)
25) Current Limit Transient Response (Case: Output short during enable) VIN=5V, CL=47µF
26) Zoomed in 25) VIN=5V, CL=47µF
VFLG (5V/div) VOUT (5V/div)
VOUT (5V/div)
IOUT (2A/div) IOUT (2A/div)
2ms/div
100us/div
12
很抱歉,暂时无法提供与“R5523N”相匹配的价格&库存,您可以联系我们找货
免费人工找货