參數(shù)資料
型號: PTH04000WAZ1
廠商: Texas Instruments, Inc.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 抗輻射高效,5安培開關(guān)穩(wěn)壓器
文件頁數(shù): 4/20頁
文件大?。?/td> 1347K
代理商: PTH04000WAZ1
www.ti.com
PIN ASSIGNMENT
PTH04000W
(TopView)
1
5
2
3
4
6
PTH04000W
SLTS247A–JUNE 2005–REVISED JULY 2005
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
This is the common ground connection for the
V
and
V
power connections. It is also the 0 V
dc
reference for the
Inhibit
, the
V
O
Adjust
, and the
Track
control inputs.
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 voltage 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 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 V
I
.
NOTE: Due to the undervoltage lockout feature, the output of the module cannot follow its own input
voltage during power up. For more information, see the related application report (SLTA054).
The positive input voltage power node to the module, which is referenced to common GND.
The Inhibit pin is an open-collector/drain-negative logic input that is referenced to GND. Applying a
low-level ground signal to this input disables the module's output. When the Inhibit control is active, the
input current drawn by the regulator is significantly reduced. If the Inhibit pin is left open-circuit, the
module produces an output voltage whenever a valid input source is applied.
A 1% resistor must be connected between this pin and GND (pin 1) to set the output voltage of the
module higher than 0.9 V. If left open-circuit, the output voltage defaults to this value. The temperature
stability of the resistor should be 100 ppm/°C (or better). The set-point range is from 0.9 V to 3.6 V. The
electrical specification table gives the standard resistor value for a number of common output voltages.
See the application information for further guidance.
The regulated positive power output with respect to the GND node.
GND
1
Track
2
I
V
I
3
I
Inhibit
4
I
V
O
Adjust
5
I
V
O
6
O
4
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