View UR5595-SH2-R_747014.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

UNISONIC TECHNOLOGIES CO., LTD US3026A
DUAL-CHANNEL USB POWER SWITCH AND OVER-CURRENT PROTECTION
DESCRIPTION
The UTC US3026A is a standard dual channels power switch with independent over-current protection fault flag functions, optimized for bus-powered Universal Serial Bus (USB) and self-powered applications, including Notebook and desktop PC's that supply power to more than one port. The UTC US3026A also offers thermal shutdown protection that reduces current consumption in fault modes for each switch and the entire device. With a 1ms delay on the fault FLAG output prevents erroneous over current reporting caused by in-rush currents during hot-plug events. In addition, the UTC US3026A employs soft-start circuitry that minimizes in-rush current in applications where highly capacitive loads are employed.
CMOS IC
SOP-8
*Pb-free plating product number: US3026AL
FEATURES
* Two P-channel power MOSFET control switch * 110A Max operating current * 5A Max standby current * 145 m Max switch resistance * 2.7V ~ 5.5V input voltage range * 500mA minimum continuous load current * Smooth turn-on eliminates in-rush induced voltage drop * 1 ms fault flag delay filters Hot-Plug events * Over-current protection * Under-voltage lockout circuit * Thermal shutdown protection * Flag indicates fault conditions
ORDERING INFORMATION
Order Number Normal Lead Free Plating US3026A-S08-R US3026AL-S08-R US3026A-S08-T US3026AL-S08-T Package SOP-8 SOP-8 Packing Tape Reel Tube
US3026AL-S08-R (1)Packing Type (2)Package Type (3)Lead Plating (1) R: Tape Reel, T: Tube (2) S08: SOP-8 (3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw Copyright (c) 2005 Unisonic Technologies Co., Ltd
1 of 11
QW-R502-086,A
US3026A
PIN CONFIGURATIONS
EN1 FLAG1 FLAG 2 EN2
CMOS IC
1 2 3 4
UTC US3026A
8 7 6 5
OUT1 IN GND OUT2
PIN DESCRIPTION
PIN NO 1 2 3 4 5 6 7 8 PIN NAME EN1 FLAG1 FLAG2 EN2 OUT2 GND IN OUT1 DESCRIPTION Switch1 Enable input: Logic-compatible enables inputs Fault Detection Flag 1 (OUTPUT): Active-low. N-ch open-drain. Indicates over-current, thermal shutdown, or UVLO conditions Fault Detection Flag 2 (OUTPUT): Active-low. N-ch open-drain. Indicates over-current, thermal shutdown, or UVLO conditions Switch2 Enable input: Logic-compatible enables inputs Switch2 OUTPUT: Drain of MOSFET for Output. Usually, connected to Load Ground Power input: Source of MOSFET for Output. Power Supply to Internal Circuitry of IC Switch1 OUTPUT: Drain of MOSFET for Output. Usually, connected to Load
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 11
QW-R502-086,A
US3026A
BLOCK DIAGRAM
CMOS IC
FLAG1 FLAG Logic
EN1
EN Control OUT1 GATE Control Thermal Shutdown
Current Limit
GND IN
Current Limit UVLO
GATE Control OUT2 EN2 EN Control FLAG2 FLAG Logic
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 11
QW-R502-086,A
US3026A
ABSOLUTE MAXIMUM RATINGS
CMOS IC
PARAMETER SYMBOL RATINGS UNIT Supply Voltage VIN -0.3 ~ +6 V Output Voltage VOUT -0.3 ~ +6 V Voltage at All Other Pins VOTHER -0.3 ~ +6 V Total Power Dissipation PD 300 mW TJMAX TJMAX 160 Junction Temperature TJ +155 Operating Temperature TOPR -40 ~ +85 Storage Temperature TSTG -55 ~ +155 Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
OPERATING RATINGS
PARAMETER SYMBOL RATINGS Supply Voltage Range VIN +2.7 ~ +5.5 Operating Temperature TOPR 0 ~ +70 Note: The human body model is a 100pF capacitor discharged through a 1.5k resistor into each pin. UNIT V
ELECTRICAL CHARACTERISTICS(TJ = 25C, VIN = 5.0V, VEN = 0V, unless otherwise specified.)
PARAMETER DC CHARACTERISTIC EN Input Logic High Low SYMBOL VIH VIL VUVLO IOUT THDOC ILEAK IEN IO(OFF) IO(ON) IFH RON RFO TEST CONDITIONS (Note 1) (Note 1) VIN=increasing Hysteresis voltage Each Output VEN = VIN VEN = 0V or VEN = VIN Switch-Off Switch-On VFLAG = 5V VIN = 5V, IOUT = 500mA, each switch VIN = 2.7V, IOUT = 500mA, each switch IFO = 10 mA, VIN = 5.0V IFO = 10 mA, VIN = 3.3V IFO = 10 mA, VIN = 2.7V TJ Increasing, with no shorted output TJ Increasing, with shorted output (s) TJ Decreasing (Note 2) MIN 2.4 TYP 1.7 1.6 2.3 100 MAX UNIT V V V mV A 1.5 0.01 -0.5 1 0.01 105 135 10 11 12 155 145 135 1 160 5 240 5 2.2 10 0.5 5 110 1 145 180 20 30 40 A A A A A A m
Under-Voltage Lockout Threshold OUT Pins Continuous Output Current Over-Current Threshold OUT Pins Output Leakage Current EN Leakage Current OFF Supply Current ON Error FLAG Leakage Current On Resistance FLAG Output Voltage Over-Temperature Shutdown Threshold
0.8 2.7
0.5
THDOT
C
AC CHARACTERISTIC Over Current Flag Delay tOC RL = 0 OUT Rise Time tR RL = 10 OUT Fall Time tF RL = 10 Turn on Delay, EN to OUT tON RL = 10 Turn off Delay, EN to OUT tOFF RL = 10 Note: 1. OFF is EN 2.4V and ON is EN 0.8V. 2. Thermal Shutdown will protect the device from permanent damage.
ms s s s s
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 11
QW-R502-086,A
US3026A
TEST CIRCUIT
CMOS IC
VIN
1M
1M
10K
10K US3026A FLAG1 IN
CIN
FLAG2 OUT1 EN1 C L1 VOUT2 EN2 K1 K2 CL2 R L2 GND OUT2 RL1
VOUT1
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 11
QW-R502-086,A
US3026A
TIMING DIAGRAM
CMOS IC
90% VIN VEN
tON 90% VOUT 90%
tOFF
tRISE 90% 10% VOUT 90%
tFALL
10%
VEN Current Limit IOUT Short Circuit
VEN
Standby Status VOUT
VOUT
VFLAG Operating temperature rising TJ Operating temperature falling
VFLAG
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 of 11
QW-R502-086,A
US3026A
FUNCTIONAL DESCRIPTION
CMOS IC
The UTC US3026A is dual P-Channel switches with active-low and active-high enable inputs, respectively. Fault conditions (such as UVLO, thermal shutdown and over-current) that appear will turn off the power switch, and the FLAG pin will go low. Of course, the two internal FLAG circuits also operate respectively. Input and Output IN (Input) is the power supply connection to the control circuitry and the source of the output MOSFET. OUTX (Output) is the connection to the drain of the output MOSFET. In a typical application circuit, current flows through the switch from IN to OUTX towards the load. If VOUT is greater than VIN when the switch is enabled, current will flow from OUTX to IN since the MOSFET is bi-directional. Power ON and OFF The UTC US3026A performs a soft-start operation on power application, which is to prevent an over-current or inrush-current from flowing through the switch from IN to OUTX towards to the load, while the high-capacity capacitor is connected to the OUTX. Thermal Shutdown The UTC US3026A is internally protected against excessive power dissipation by thermal shutdown protection circuit. If device junction temperature rise above approximately 145 , both switches are turned off, both fault FLAG outputs are activated, and they goes low. Hysteresis ensures that both switches turned off by thermal shutdown will not be turned on again until the die temperature is reduced to 135 . When the thermal shutdown circuit is activated, the output pins are in the OFF status. However, the UTC US3026A enters the standby status when EN pins are all inactive. Current Limit The current limit circuit is designed to protect the output MOSFET, the load and the IC supply from damage caused by excessive currents. The current limit threshold is preset internally, If an over-current is detected, the IC performs a slow-start operation again, it is assumed that output is short circuit, and FLAG pin will go low, FLAG output is available to indicate fault conditions independently to the USB controller. Under-Voltage Lockout UVLO prevents the output MOSFET switch from turning on until input voltage exceeds 2.3V (typical). If input voltage drops below 2.2V (typical), UVLO shuts off the both output MOSFET switches and signals the FLAG. Fault FLAG The fault FLAG is an output with open-drain of N-channel. The fault FLAG is pulled down when any of the conditions such as under-voltage, current limit and thermal shutdown. In a typical application circuit, the FALG pin has a pull-up resistor of 10k to input voltage.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 11
QW-R502-086,A
US3026A
TYPICAL APPLICATION CIRCUIT
US3026A 5V 1F 10k 10k IN OUT1 150F
CMOS IC
USB Port VBUS D+ DGND
USB Controller Over-Current ON/OFF Over-Current D+ DON/OFF FLAG1 EN1 FLAG2 EN2 GND OUT2 150F DATA DATA
USB Port VBUS D+ DGND DATA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
8 of 11
QW-R502-086,A
US3026A
TYPICAL CHARACTERISTICS (TJ = 25 , VIN = 5.0V, unless otherwise specified)
140 120 Supply Current vs. Input Voltage 0.7
CMOS IC
Supply Current (Standby) vs. Input Voltage
Supply Current in Standby Mode (A)
3.0
0.6 0.5 0.4 0.3 0.2 0.1 0 2.5
Supply Current (A)
100 80 60 40 20 0 2.5
3.5
4.0 4.5 5.0 Input Voltage (V)
5.5
6.0
3.0
3.5
4.0 4.5 5.0 Input Voltage (V)
5.5
6.0
20 18
FLAG On-Resistance ( )
FLAG On -Resistance vs. Input Voltage
160 150
) Output On-Resistance (m
Output On-Resistance vs. Input Voltage
16 14 12 10 8 6 4 2 2.5 3.0 3.5 4.0 4.5 5.0 Input Voltage (V) 5.5 6.0 RFO1 RFO2
140 130 120 110 100 90 80 70 2.5 3.0 3.5 4.0 4.5 5.0 Input Voltage (V) 5.5 6.0 RON1 RON2
2.1 1.8
Over-Current Limit (A)
Over-Current Limit vs. Input Voltage
1.9 1.8
EN Threshold Voltage (V)
EN Threshold Voltage vs Input Voltage .
1.5 1.2 0.9 0.6 0.3 0 2.5
1.7 1.6 1.5 1.4 1.3 1.2 2.5 VIL
VIH
3.0
3.5
4.0 4.5 5.0 Input Voltage (V)
5.5
6.0
3.0
3.5
4.0 4.5 5.0 Input Voltage (V)
5.5
6.0
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
9 of 11
QW-R502-086,A
US3026A
TYPICAL CHARACTERISTICS(Cont.)
Turn-On Response (VIN vs. VOUT)
CMOS IC
Turn-Off Response (VIN vs. VOUT)
VIN=5V, C IN=1F, COUT=1F, R L=10 VIN (2V/Div) VIN (2V/Div)
VIN=5V, CIN=1F, COUT=1F, R L=10
VOUT (2V/Div) (200s/Div)
VOUT (2V/Div) (100s/Div)
Turn-On Response (VEN vs. VOUT)
Turn-Off Response (VEN vs. VOUT)
VIN=5V, C IN=1F, C OUT=1F, R L=10 VEN (2V/Div) VEN (2V/Div)
VIN=5V, CIN=1F, COUT=1F, R L=10
VOUT (2V/Div) (200s/Div)
VOUT (2V/Div) (100s/Div)
Over-Current Response VIN=5V, CIN=1F, C OUT=1F VEN (5V/Div) VEN (5V/Div)
Short-Cicuit Response VIN=5V, CIN=1F, COUT=1F
VOUT (5V/Div)
VOUT (5V/Div)
VFLAG (5V/Div)
VFLAG (5V/Div)
(500s/Div)
(500s/Div)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
10 of 11
QW-R502-086,A
US3026A
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
11 of 11
QW-R502-086,A

▲Up To Search▲

Price & Availability of UR5595-SH2-R

	To Download UR5595-SH2-R Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .