參數(shù)資料
型號: PTV12010WAH
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源模塊
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝: SIP-8
文件頁數(shù): 20/22頁
文件大小: 386K
代理商: PTV12010WAH
www.ti.com
DEVICE INFORMATION
SLTS234B – DECEMBER 2004 – REVISED FEBRUARY 2007
TERMINAL FUNCTIONS
TERMINAL
DESCRIPTION
NAME
NO.
VI
8
The positive input voltage power node to the module, which is referenced to common GND.
VO
2, 3
The regulated positive power output with respect to the GND node.
This is the common ground connection for the VI and VO power connections. It is also the 0 VDC reference for the
GND
1, 6
control inputs.
The Inhibit pin is an open-collector/drain, active-low input that is referenced to GND. Applying a low-level ground
signal to this input disables the module’s output and turns off the output voltage. When the Inhibit control is active,
the input current drawn by the regulator is significantly reduced. If the inhibit feature is not used, the control pin
Inhibit
7
should be left open-circuit. The module then produces an output voltage whenever a valid input source is applied.
Do not place an external pull-up on this pin. For power-up into a non-prebiased output, it is recommended that
AutoTrack be utilized for On/Off control. See the Application Information for additional details.
A 1% resistor must be connected directly between this pin and GND (pin 1) to set the output voltage of the
module higher than its lowest value. The temperature stability of the resistor should be 100 ppm/°C (or better).
The set-point range is 1.2 V to 5.5 V for W-suffix devices and 0.8 V to 1.8 V for L-suffix devices. The resistor
value required for a given output voltage may be calculated using a formula. If left open-circuit, the module output
Vo Adjust
4
voltage defaults to its lowest value. For further information on output voltage adjustment, consult the related
application note.
The specification table gives the standard resistor values for a number of common output voltages.
This is an analog control input that enables the output voltage to follow an external voltage. This pin becomes
active typically 20 ms after the input voltage has been applied, and allows direct control of the output voltage from
0 V up to the nominal set-point voltage. Within this range, the output follows the voltage at the Track pin on a
volt-for-volt basis. When the control voltage is raised above this range, the module regulates at its set-point
Track
5
voltage. The feature allows the output voltage to rise simultaneously with other modules powered from the same
input bus. If unused, this input should be connected to VI.
NOTE: Due to the undervoltage lockout feature, the output of the module cannot follow its own input voltage
during power up. Consult the related Application Information for further guidance.
7
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