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參數(shù)資料
| 型號(hào)： | LX2750CLQ-TR |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PQCC16 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, MLPQ-10 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 388K |
| 代理商： | LX2750CLQ-TR |
LX2750
Microsemi
Analog Mixed Signal Group
5
Rev. 1.0a
07/14/10
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
PIN DESCRIPTIONS
PIN SYMBOL
PIN DESCRIPTION
This pin is internal 5V regulator output and supplies the internal 5V bias circuit. A high
freq 1uF ceramic capacitor is recommended to connect this pin to ground.
This pin supplies voltage to high side FET driver. A high freq minimum 0.1uF ceramic
capacitor is placed as close as possible to and connected to this pin and SW pin.
Ground pin.
This pin is the error amplifiers inverting input. This pin is connected via resistor divider to
the output of the switching regulator to set the output DC voltage.
This pin is the output of the error amplifier and together with FB pin is used to compensate
the voltage control feedback loop.
This pin is connected to source of high side FETs and provide return path for the high
side driver.
High side gate driver output.
Low side gate driver output.
Voltage supply for the internal 5V regulator, LDO controller and low side driver.
Oscillator's frequency can be set by using an external resistor from this pin to GND.
Pulling this pin down below 0.3V shuts down both controllers.
LDO controller feedback input. This pin is connected via resistor divider to the output of
the LDO to set the output DC voltage.
LDO controller output. This pin is controlling the gate of an external NCH MOSFET. The
maximum rating of this pin is 16V.
Connecting this pin to 5VREG voltage control mode will be chosen.
Connecting this pin to ground, constant on time control mode will be chosen.
Connecting this pin to 5VREG, synchronous mode will be chosen.
Connecting this pin to ground, diode emulation mode will be chosen, LDRV will be off
when inductor current becomes negative current.
Reference input voltage for error amplifier.
2.5V external reference. OCP trigger level is set by connect resistor from this pin to
ground.
PGOOD indicator for switching regulator. It requires a pull up resistor to Vcc or lower
voltage. When FB pin reaches 85% of the reference voltage PGOOD transitions from LO
to HI state.
VCC
BST
GND
FB
COMP
SW
HDRV
LDRV
VIN
RT
LDO_FB
LDO_DRV
MODE
FCCM
REFIN
VREF_OC
PGOOD
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