BD4154FV-E2 Rohm Semiconductor, BD4154FV-E2 Datasheet - Page 16

• Manufacturer Part Number: BD4154FV-E2
• Description: POWER SWITCH EXPRESS CARD, SSOP-B20
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of BD4154FV-E2

• Primary Input Voltage: 3.6V
• No. Of Outputs: 1
• Output Voltage: 5V
• Output Current: 1.3A
• Voltage Regulator Case Style: SSOP
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +100°C
• Svhc: No SVHC
• Applications: PCMCIA, ExpressCard™
• Current - Supply: 250µA
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

●Description of operations
VCC (BD4153FV, BD4153EFV)
BD4153FV, BD4153EFV has an independent power input pin for an internal circuit operation in order to activate UVLO, Input
logic, and charge pump, the maximum current through which is rated to 2 mA. It is recommended to connect a bypass capacitor
of 0.1 µF or so to VCC pin.
EN (BD4153FV, BD4153EFV)
With an input of 2.3 volts or higher, this terminal turns to “High” level to activate the circuit, while it turns to “Low” level to
deactivate the circuit (with the standby circuit current of 35 µA), discharges each output and lowers output voltage If the input is
lowered to 0.8 volts or less.
EN (BD4154FV/BD4156MUV)
With an input of 2.0 volts or higher, this terminal goes HIGH to activate the circuit, and goes LOW to deactivate the circuit (with
the standby circuit current of 40 µA), It discharges each output and lowers output voltage when the input falls to 0.8 volts or less.
V3_IN, V15_IN, and V3AUX_IN (BD4153FV, BD4153EFV)
These are the input terminals for each channel of a 3ch switch. V3_IN and V15_IN terminals have two pins each, which should
be short-circuited on the pc board with a thick conductor. And V3AUX IN terminal should be short-circuited to VCC terminal.
Through these three terminals, a big current runs (V3_IN: 1.35A, V3AUX_IN: 0.275 A, and V15_IN: 0.625 A). In order to lower
the output impedance of the power supply to be connected, it is recommended to provide ceramic capacitors (of B-characteristics
or better) between these terminals and ground; 1 µF or so between V3_IN and GND and between V15_IN and GND, and 0.1 µF
or so between V3AUX_IN and GND.
V3_IN, V15_IN, and V3AUX_IN (BD4154FV, BD4155FV, BD4156MUV)
These are the input terminals for each channel of a 3ch switch. V3_IN and V15_IN terminals have two pins each, which should
be short-circuited on the pc board with a thick conductor. A large current runs through these three terminals : (V3_IN: 1.35A;
V3AUX_IN: 0.275 A; and V15_IN: 0.625 A). In order to lower the output impedance of the connected power supply, it is
recommended that ceramic capacitors (with B-type characteristics or better) be provided between these terminals and the ground.
Specifically, the capacitors should be on the order of 1 µF between V3_IN and GND, and between V15_IN and GND; and on the
order of 0.1 µF between V3AUX_IN and GND.
V3, V15, and V3AUX (BD4153FV, BD4153EFV, BD4154FV, BD4155FV, BD4156MUV)
These are the output terminals for each switch. V3 and V15 terminals have two pins each, which should be short-circuited on
the pc board and connected to an ExpressCard connector with a thick conductor as shortest as possible. In order to stabilize
the output, it is recommended to provide ceramic capacitors (of B-characteristics or better) between these terminals and ground;
10 µF or so between V3 and GND and between V15 and GND, and 1 µF or so between V3AUX and GND.
CPPE# (BD4153FV, BD4153EFV)
The pin used to find whether a PCI-Express signal compatible card is provided or not. Turns to “High” level with an input of 2.3
volts or higher, which means that no card is provided, while it turns to “Low” level when the input is lowered to 0.8 volts or less,
which means that a card is provided. Controls turning ON/OFF of the switch according to the status of the system.
CPPE# (BD4154FV, BD4155FV, BD4156MUV)
This pin is used to find whether or not a PCI-Express signal compatible card is present. Turns to “High” level with an input of 2.0
volts or higher, which means that no card is provided, while it turns to “Low” level when the input is lowered to 0.8 volts or less,
which means that a card is provided. Controls the ON/OFF, switch selecting the proper mode based on the status of the system.
Pull up resistance (100kΩ～200kΩ) is built into, so the number of components is reduced.
CPUSB# (BD4153FV, BD4153EFV)
The pin used to find whether a USB2.0 signal compatible card is provided or not. Turns to “High” level with an input of 2.3 volts
or higher, which means that no card is provided, while it turns to “Low” level when the input is lowered to 0.8 volts or less, which
means that a card is provided. Controls turning ON/OFF of the switch according to the system status.
CPUSB# (BD4154FV, BD4155FV, BD4156MUV)
This pin is used to find whether or not a USB2.0 signal compatible card is present. Turns to “High” level with an input of 2.0 volts
or higher, which means that no card is provided, while it turns to “Low” level when the input is lowered to 0.8 volts or less, which
means that a card is provided. Controls the ON/OFF switch, selecting the proper mode based on the system status.
Pull up resistance (100kΩ～200kΩ) is built into, so the number of components is reduced.
SYSR (BD4153FV, BD4153EFV)
The pin used to detect the system status. Turns to “High” level with an input of 2.3 volts or higher, which means that the system
is activated, while it turns to “Low” level when the input is lowered to 0.8 volts or less, which means that the system is on standby.
SYSR (BD4154FV, BD4156MUV)
This pin is used to detect the system status. Turns to “High” level with an input of 2.0 volts or higher, which means that the
system is activated, while it turns to “Low” level when the input is lowered to 0.8 volts or less, which means that the system is on
standby. (Pull up resistance (100kΩ～200kΩ) is built into, so the number of components is reduced.)
SYSR (BD4155FV)
The pin used to detect the system status. Turns to “High” level with an input of 2.0 volts or higher, which means that the system
is activated, while it turns to “Low” level when the input is lowered to 0.8 volts or less, which means that the system is on standby.
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