HT7465 Просмотр технического описания (PDF) - Holtek Semiconductor
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HT7465 Datasheet PDF : 11 Pages
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HT7465
Pin Description
Pin Name
NC
BS
VIN
SW
GND
FB
COMP
EN
SS
Description
Not used
Internal power NMOS gate drive boost input.
A 10nF or greater value capacitor should be connected from SW to BS for additional Power NMOS
gate driving purposes.
Power supply input.
The input supply pin for the device, VIN, is connected to a supply voltage between 4.75V to 24V.
Power switching output.
The internal power MOS drain is connected to the inductor, diode and VIN.
Ground.
Device ground voltage reference.
Feedback pin.
The feedback pin is connected to an external resistor divider to measure the output voltage.
Error amplifier output.
Used for compensation of the regulation control loop. Connect a series RC network from COMP to
GND to compensate the regulation control loop. The COMP pin value is 0.92V.
Enable input.
This pin is set high to turn on the regulator and low to turn it off. The pin should be left unconnected
if not used.
Soft-start input.
If the soft start function is to be used then an external capacitor should be connected between this
pin and ground. If the soft start function is not required the pin should be left open.
Absolute Maximum Ratings
Maximum Input Supply Voltage.............................26V
Switch Node Voltage..............................................26V
Feedback Voltage......................................................6V
EN Voltage................................................................6V
Comp Voltage...........................................................6V
SS Voltage.................................................................6V
Maximum Junction Temperature........................ 150°C
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings”
may cause substantial damage to the device. Functional operation of this device at other conditions beyond
those listed in the specification is not implied and prolonged exposure to extreme conditions may affect
device reliability.
Recommended Operating Conditions
Input Supply Voltage................................4.75V ~ 24V
Ambient Temperature Range................ -40°C ~ +85°C
Rev. 1.00
3
September 02, 2011
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