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LM3241TLX/NOPB Datasheet(PDF) 4 Page - Texas Instruments

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tên linh kiện LM3241TLX/NOPB
Nội dung chi tiết  LM3241 6MHz, 750mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers
tải về  23 Pages
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nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
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LM3241
SNOSB38B – JANUARY 2009 – REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Feedback voltage at minimum
VFB,MIN
PWM mode, VCON = 0.24V
0.58
0.6
0.62
setting
V
Feedback voltage at maximum
PWM mode, VCON = 1.36V, VIN =
VFB,MAX
3.332
3.4
3.468
setting
3.9V
EN = SW = VCON = 0V
ISHDN
Shutdown supply current
0.1
2
µA
(4)
PWM mode, No switching
IQ_PWM
PWM mode Quiescent current
VCON = 0V, FB = 1V
620
750
(5)
µA
ECO mode, No switching
IQ_ECO
ECO mode Quiescent current
VCON = 0.8V, FB = 2.05V
45
60
(5)
VIN = VGS = 3.6V
RDSON (P)
Pin-pin resistance for PFET
160
250
ISW = 200 mA
m
VIN = VGS = 3.6V
RDSON (N)
Pin-pin resistance for NFET
110
200
ISW = −200 mA
ILIM
PFET switch peak current limit
(6)
1300
1450
1600
mA
FOSC
Internal oscillator frequency
5.7
6
6.3
MHz
VIH
EN Logic high input threshold
1.2
V
VIL
EN Logic low input threshold
0.4
Gain
VCON to VOUT gain
0.24V
≤ VCON ≤ 1.36V
2.5
V/V
ICON
VCON pin leakage current
VCON = 1.0V
±1
µA
(1)
All voltages are with respect to the potential at the GND pins.
(2)
Min and Max limits are specified by design, test, or statistical analysis.
(3)
The parameters in the electrical characteristics table are tested under open loop conditions at VIN = 3.6V unless otherwise
specified. For performance over the input voltage range and closed-loop results, refer to the datasheet curves.
(4)
Shutdown current includes leakage current of PFET.
(5)
IQ specified here is when the part is not switching under test mode conditions. For operating quiescent current at no load, refer to
datasheet curves.
(6)
Current limit is built-in, fixed, and not adjustable.
4
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Copyright © 2009–2013, Texas Instruments Incorporated
Product Folder Links: LM3241



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