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参数资料
| 型号： | TPS62734DRYT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, 3000 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 1 X 1.50 MM, 0.60 MM HEIGHT, PLASTIC, MO-287UFAD, SON-6 |
| 文件页数： | 22/27页 |
| 文件大小： | 4698K |
| 代理商： | TPS62734DRYT |
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ON/BYP
STAT
VOUT
SLVSAC3
– MAY 2011
ELECTRICAL CHARACTERISTICS (continued)
VIN = 3.0V, VOUT = 2.1V, ON/BYP = VIN, TA = –40°C to 85°C typical values are at TA = 25°C (unless otherwise noted), CIN =
2.2
μF, L = 2.2μH, COUT = 2.2μF, see parameter measurement information
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
OUTPUT
VREF
Internal Reference Voltage
0.70
V
VIN = 3.0V
TA = 25°C
–1.5
0
1.5
%
VOUT Feedback Voltage Comparator Threshold
Accuracy
TA = –40°C to 85°C
–2.5
0
2.5
VVOUT
DC output voltage load regulation
IOUT = 1mA to 50mA VIN = 3.0V, VOUT = 2.1
-0.01
%/mA
V
DC output voltage line regulation
IOUT = 20 mA, 2.4V ≤ VIN ≤ 3.9V
0.01
%/V
ILK_SW
Leakage current into SW pin
VIN = VOUT = VSW = 3.0 V, ON/Byp= GND
0.0
100
nA
(2)
The internal resistor divider network is disconnected from VOUT pin.
PIN FUNCTIONS
PIN
I/O
DESCRIPTION
NAME
NO
VIN
3
PWR
VIN power supply pin. Connect this pin close to the VIN terminal of the input capacitor. A ceramic capacitor
of 2.2
F is required.
GND
4
PWR
GND supply pin. Connect this pin close to the GND terminal of the input and output capacitor.
ON/BYP
5
IN
This is the mode selection pin of the device. Pulling this pin to low forces the device into ultra low power
bypass mode. The output of the DC/DC converter is connected to VIN via an internal bypass switch.
Pulling this pin to high enables the DC/DC converter operation. This pin must be terminated and is
controlled by the system. In case of CC2540, connect this to the power down signal which is output on one
of the P1.x ports (see CC2540 user guide).
SW
2
OUT
This is the switch pin and is connected to the internal MOSFET switches. Connect the inductor to this
terminal.
VOUT
6
IN
Feedback Pin for the internal feedback divider network and regulation loop. The internal bypass switch is
connected between this pin and VIN. Connect this pin directly to the output capacitor with short trace.
STAT
1
OUT
This is the open drain status output with active low level. An internal comparator drives this output. The pin
is high impedance with ON/BYP = low. With ON/BYP set to high the device and the internal VOUT
comparator becomes active. The STAT pin is set to low once the output voltage is higher than 93% of
nominal VOUT and high impedance once it is below this threshold. If not used, this pin can be left open.
4
Copyright
2011, Texas Instruments Incorporated
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