CM3501-02SN
更新时间：2024-09-18 06:24:17
品牌：CALMIRCO
描述：Dual USB Overcurrent Switch 750mA (VCC) / 100mA (VSBY)
概述
规格参数
数据手册CM3501-02SN 概述
Dual USB Overcurrent Switch 750mA (VCC) / 100mA (VSBY) 双USB过流开关750毫安（ VCC ） / 100毫安（ VSBY ） 电源管理电路
CM3501-02SN 规格参数
| 是否Rohs认证： | 不符合 | 生命周期： | Obsolete |
| 零件包装代码： | SOIC | 包装说明： | SOP, |
| 针数： | 8 | Reach Compliance Code： | unknown |
| ECCN代码： | EAR99 | HTS代码： | 8542.39.00.01 |
| 风险等级： | 5.91 | 可调阈值： | NO |
| 模拟集成电路 - 其他类型： | POWER SUPPLY SUPPORT CIRCUIT | JESD-30 代码： | R-PDSO-G8 |
| 长度： | 4.9 mm | 湿度敏感等级： | 1 |
| 信道数量： | 1 | 功能数量： | 1 |
| 端子数量： | 8 | 最高工作温度： | 85 °C |
| 最低工作温度： | -40 °C | 封装主体材料： | PLASTIC/EPOXY |
| 封装代码： | SOP | 封装形状： | RECTANGULAR |
| 封装形式： | SMALL OUTLINE | 峰值回流温度（摄氏度）： | 225 |
| 认证状态： | Not Qualified | 座面最大高度： | 1.75 mm |
| 最大供电电压 (Vsup)： | 5.5 V | 最小供电电压 (Vsup)： | 4.5 V |
| 标称供电电压 (Vsup)： | 5 V | 表面贴装： | YES |
| 温度等级： | INDUSTRIAL | 端子形式： | GULL WING |
| 端子节距： | 1.27 mm | 端子位置： | DUAL |
| 处于峰值回流温度下的最长时间： | NOT SPECIFIED | 宽度： | 3.9 mm |
| Base Number Matches： | 1 |
CM3501-02SN 数据手册
通过下载CM3501-02SN数据手册来全面了解它。这个PDF文档包含了所有必要的细节，如产品概述、功能特性、引脚定义、引脚排列图等信息。
PDF下载PRELIMINARY
CM3501
CALIFORNIA MICRO DEVICES
Dual USB Overcurrent Switch 750mA (VCC) / 100mA (VSBY)
The CM3501 also prevents backdrive current
Features
flowing into the host from the connected peripheral.
This can occur when VCC is removed as the host
powers down, and the peripheral still has normal
power applied. The 5V from the peripheral can
therefore be linked to the host’s VBUS, potentially
causing backdrive current into the host and
overloading the peripheral power supply.
•
Dual outputs, each with independent over-current
protection circuitry and indicator
•
Supports standby mode in PCs so that a peripheral
can ramp down safely to a current <100mA
Low ON-resistance switches
•
•
Up to 750mA (VCC) / 100mA (VSBY) continuous
current on each output
•
•
Over-current limits at 750mA / 100mA respectively
10msec min fault blanking delay on OC# outputs
prevents false overcurrent alarms
Prevents backdrive current when host powered off
Low operating current (95µA typ.)
Low quiescent current when disabled (<1µA max)
Small 8-Lead SOIC package
Pin Diagram
OC1#
VOUT1
VOUT2
OC2#
GND
•
•
•
•
VCC
VSBY
Applications
SEL
•
PC motherboards with USB ports (i.e., can use a
CM3501 for 2 ports or 2 CM3501s for 4 ports, etc)
SOIC-8
Typical Application Circuit
Product Description
California Micro Devices’ CM3501 is a dual port
USB overcurrent power switch that selects between
two independent 5V inputs available on a PC,
depending on the state of a logic input (SEL). The
device has two pairs of power switches, and each
pair is an analog “OR” function, providing a
continuous voltage at both outputs during power
transfer beween inputs.
GND
VCC
OC1#
VOUT1
VOUT2
OC2#
VBUS
1 USB Port
1 USB Port
5V VCC
5V VSBY
VSBY
SEL
VBUS
VCC is the main 5V supply, which can be disabled in
a PC, and VSBY is the 5V standby supply which is
powered up whenever the PC has power. When the
‘SEL’ pin is at logic high, VCC is the assigned input
power supply. When ‘SEL’ is at logic low, VSBY is
used to power the output, and no current is taken
from VCC. Both switches can be deselected and
switched off by not driving (floating) the ‘SEL’ input,
which places the chip in low power mode.
Select VCC
Simplified Electrical Schematic
Both pairs of switches have over-current protection.
Depending on whether ‘SEL’ is high or low, a current
over 750mA or 100mA respectively out of either
output causes the device to enter a constant-current
mode, where the output voltage is progressively
reduced to prevent the current from increasing
further. Each output is independent of the other, so if
one of the switches is switched on but is not in
overcurrent mode then it will remain switched on.
The OC# output becomes active only if the
750mA
Over
current
OC1#
VOUT1
VCC
SEL
100mA
Over
current
VSBY
750mA
Over
current
OC2#
VOUT2
overcurrent condition exceeds
continuous duration of 10ms.
If the overcurrent condition is severe enough that
a
minimum
the part heats up to the thermal limit TMAX, the switch
100mA
Over
current
turns off and the temperature cools down to TMIN
.
The switch then turns on again, and the device
heats up again, and so on, until the fault is removed.
© 2002 California Micro Devices Corp. All rights reserved.
C0970500
09/10/03
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
1
PRELIMINARY
CM3501
CALIFORNIA MICRO DEVICES
Absolute Maximum Ratings
Parameter
ESD Protection (All pins, HBM)
Rating
± 2000
Unit
V
VCC, VSBY Input Voltage
Storage Temperature Range
Operating Ambient
Operating Junction
Output Current Loading
+ 5.6, GND - 0.5
-55 to +150
-40 to +85
-40 to +150*
Internally limited
0.5
V
°C
A
W
Package Power Dissipation
* - Internally limited
Operating Conditions (unless specified otherwise)
Parameter
Range
4.5 to 5.5
Unit
V
VCC, VSBY Input Voltage
Ambient Temperature
ILOAD per port
-40 to +85
°C
mA
VCC
VSBY
0 to 750
0 to 100
Electrical Operating Characteristics (over operating conditions unless specified otherwise)
Symbol Parameter
UVLO VCC/VSBY voltage under which
Conditions
MIN
TYP
2.2
MAX UNIT
2.5
V
T=25°C
circuit locks out - will not operate
VOUT1
VOUT2
,
Output Voltage
ILOAD = 500mA, VCC = 5.0V,
SEL = 5V, T = 25°C
ILOAD = 0 to 750mA; VCC = 5V
T=25°C
ILOAD = 0 to 100mA; VSBY = 5V
T = 25°C
4.9
V
RSW1
RSW2
VCC Switch ON-Resistance
VSBY Switch ON-Resistance
VCC over-current limit
0.13
0.20
1.4
Ω
Ω
ILIM VCC
VCC = 5V
VSBY = 5V
750
100
10
mA
mA
ms
ILIM VSBY VSBY over-current limit
tFBD
Time delay from overcurrent
detection to OC output indication
(fault blanking delay)
20
TMAX
TMIN
Temperature at which hot switch
turns off during overcurrent
Temperature at which cool
switch turns on, after cooling
from TMAX
150
125
°C
°C
IR CC
IR SBY
ICC ON
Reverse leakage from outputs
to inputs – backdrive current
VCC operating supply current
VCC = 0V, VOUT = 5V, SEL floating
VSBY= 0V, VOUT = 5V, SEL floating
VCC = 5V, SEL = high, ILOAD = 0mA
1
1
95
µA
µA
µA
µA
µA
µA
µA
µA
ISBY OFF
ISBY ON
ICC H Q
ISBY L Q
ICC L Q
VSBY standby supply current
VSBY operating supply current
VCC higher, quiescent current
VSBY lower, quiescent current
VCC lower, quiescent current
VSBY higher, quiescent current
VSBY = 5V, SEL=high, ILOAD = 0mA
VSBY = 5V, SEL = low, ILOAD = 0mA
VCC = 5V, VSBY < VCC, SEL floating
VCC = 5V, VSBY < VCC, SEL floating
VCC = 5V, VSBY >VCC, SEL floating
VCC = 5V, VSBY >VCC, SEL floating
1
95
40
1
1
ISBY H Q
40
VIH-EN
VIL-EN
VOL-OC
EN# input Logic-1 threshold
EN# input Logic-0 threshold
OC# output Logic-0 threshold
VCC = 5V
VCC = 5V
IOC = 1mA to VCC
2
V
V
V
0.8
0.4
Nte –
The “H” version has a higher ON-resistance. All other functions are identical to the regular version.
© 2003 California Micro Devices Corp. All rights reserved
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
09/10/03
2
PRELIMINARY
CM3501
CALIFORNIA MICRO DEVICES
Pin Functions
During the cold-start interval when the input is initially
applied, internal circuitry provides a soft turn-on for
the switches, which limits peak in-rush current.
VCC is the higher current power source. Whenever the
SEL pin is above 2V it will be selected, and VSBY will be
deselected.
VSBY is the lower current power source. Whenever the
SEL pin is below 0.8V it will be selected, and VCC will
be deselected. The two VSBY power switches can only
supply 100mA.
SEL is the 3-level logic input pin that is used to
control which of the power switch pairs are turned on.
Set SEL high to select VCC, set SEL low to select
VSBY, or allow SEL to float to deselect both power
switches. The external device driving the SEL pin
must able to source and sink 100µA while
maintaining the proper VIL/VIH levels.
VSB
VOUT1 provides the power for a USB port. The internal
MOSFET switches are designed for low voltage drops
from the voltage input pins at their full rated currents.
VOUT2 provides the power for a second USB port. The
internal MOSFET switches are designed for low voltage
drops from the voltage input pins at their full rated
currents.
OC1#, OC2# are independent, active low open-
drain outputs, indicating an overcurrent fault condition
has been detected at VOUT1 or VOUT2. There is a built-
in 10msec (min.) fault blanking period after the
overcurrent fault condition has been detected, before
these outputs become active. The OC# outputs
become deasserted only when both the overcurrent
condition stops and when the voltage drop across the
switch is less than 1V. External pull-up resistors of
10k - 100k are required if the OC# outputs are used.
Current loads of up to 750mA are allowed (from Vcc).
Current loads above 750mA may cause the constant-
current limiting circuit to operate – reducing the output
voltage.
Continuous over-current loads will cause the part’s
internal temperature to rise. If the internal temperature
exceeds 150’C then any switch that is in overcurrent
mode will be immediately turned off. Any switch that is
not in overcurrent mode will remain on – it will not be
affected by the over-temperature detection. Once the
part has cooled to 125’C then the switch or switches
that were in overcurrent mode will be automatically
turned on again.
GND is the negative reference for all voltages.
Pin Functions
Pin No. Symbol Description
1
2
3
4
5
6
GND
Negative reference for all voltages.
VCC
High current positive supply input.
VSBY
SEL
OC2#
VOUT2
Standby positive supply input. Also provides internal power.
3-level logic input. High = VCC, Low = VSBY, Floating = both off
Active low when VOUT2 is in overcurrent mode.
Output voltage internally switched to either VCC or VSBY input source.
7
8
VOUT1
OC1#
Output voltage internally switched to either VCC or VSBY input source.
Active low when VOUT1 is in overcurrent mode.
STANDARD PART ORDERING INFORMATION
Pins
Package
SOIC
Ordering Part Number1
Part Marking
8
CM3501-02SN
CM3501-02SN
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
© 2003 California Micro Devices Corp. All rights reserved
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
09/10/03
3
PRELIMINARY
CM3501
CALIFORNIA MICRO DEVICES
OC# Response to Momentary Overcurrent Fault
>750mA
<700mA
IOUT
V
drops to reduce IOUT
OUT
VOUT
__
_
OC# goes active
after 10ms (min)
20ms (typ.) delay
OC# goes inactive as
soon as overcurrent
condition stops
OC#
<150’C
DieTemp.
OC# Response to Continuous Overcurrent Fault
>750mA
IOUT
Re-powers when
temperature drops
to 125’C
V
drops to reduce I
OUT
OUT
Total powerdown when
over-temperature limit
reached
VOUT
OC# goes active
after 10ms (min)
20ms (typ.) delay
OC#
OC# stays low
150’C
TMAX = 150’C
Temp.
TMIN = 125’C
Note: The other port stays on (unless it is also in current limit.)
© 2003 California Micro Devices Corp. All rights reserved
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
09/10/03
4
PRELIMINARY
CM3501
CALIFORNIA MICRO DEVICES
Typical Operating Characteristics
CM3501 ICC vs. VCC
120
110
100
90
80
Idd(SEL=Vdd)
70
Idd(SEL=floats)
60
50
40
30
20
4
4.2
4.4
4.6
4.8
5
5.2
5.4
5.6
VCC [V]
CM3501 Vout-Iout characteristic (SEL=0V, Vsby active)
6
5
4
3
2
1
0
0
0.1
0.2
0.3
0.4
0.5
0.6
IOUT [A]
© 2003 California Micro Devices Corp. All rights reserved
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
09/10/03
5
PRELIMINARY
CM3501
CALIFORNIA MICRO DEVICES
CM3501 Vout-Iout characteristic (SEL=5V, Vdd active)
6
5
4
3
2
1
0
0
0.5
1
1.5
2
2.5
3
3.5
IOUT [A]
OC# Fault Blanking Delay
60
50
40
30
20
10
0
3.5
4
4.5
5
5.5
6
VCC [V]
© 2003 California Micro Devices Corp. All rights reserved
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
09/10/03
6
PRELIMINARY
CM3501
CALIFORNIA MICRO DEVICES
SOIC-8 Package Dimensions
© 2003 California Micro Devices Corp. All rights reserved
430 N. McCarthy Blvd, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
09/10/03
7
CM3501-02SN 相关器件
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|
| CM3503 | CALMIRCO | USB 5V Single 1.4A Overcurrent Switch | 获取价格 |
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| CM3504 | PANJIT | HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Amperes) | 获取价格 |
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| CM3504 | TRSYS | HIGH CURRENT SILICON BRIDGE RECTIFIERS | 获取价格 |
|
| CM3506 | PANJIT | HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Amperes) | 获取价格 |
|
| CM3506 | TRSYS | HIGH CURRENT SILICON BRIDGE RECTIFIERS | 获取价格 |
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| CM3508 | PANJIT | HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Amperes) | 获取价格 |
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