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LM3241 Datasheet(PDF) 5 Page - Texas Instruments

tên linh kiện LM3241
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
www.ti.com
SNOSB38B – JANUARY 2009 – REVISED APRIL 2013
SYSTEM CHARACTERISTICS
The following spec table entries are guaranteed by design providing the component values in the Typical Application Circuit
are used. These parameters are not verified by production testing. Min and Max values apply over the full operating
ambient temperature range (-30°C
≤ TA ≤ 85°C) and over the VIN range = 2.7V to 5.5V unless otherwise specified. L = 0.47
µH, DCR = 50 m
Ω, CIN = 10 µF, 6.3V, 0603 (1608), COUT = 4.7 µF, 6.3V, 0603 (1608).
Sym
Parameter
Condition
Min
Typ
Max
Unit
bol
s
VOUT step rise time from 0.6V to 3.4V (to
VIN = 3.6V, VCON = 0.24V to 1.36V
25
reach 3.26V)
VCON TR = 1 µs, RLOAD = 10Ω
TCON
µs
TR
VOUT step fall time from 3.4V to 0.6V (to reach VIN = 3.6V, VCON = 1.36V to 0.24V
25
0.74V)
VCON TF = 1 µs, RLOAD = 10Ω
D
Maximum Duty cycle
100
%
IOUT
Maximum output current capability
2.7V
≤ VIN ≤ 5.5V
750
mA
0.24V
≤ VCON ≤ 1.36V
CCON VCON input capacitance
VCON = 1V
5
10
pF
Test frequency = 100 KHz
Line
Linearity in control range 0.24V to 1.36V
Monotronic in nature (1)
−3
+3
%
arity
−50
+50
mV
Turn-on time (time for output to reach 95%
EN = Low-to-High
TON
final value after Enable low-to-high transition)
VIN = 4.2V, VOUT = 3.4V
50
µs
IOUT = < 1mA, COUT = 4.7 µF
VIN = 3.6V, VOUT = 0.8V
75
IOUT = 10 mA, ECO mode
VIN = 3.6V, VOUT = 1.8V
90
η
Efficiency
%
IOUT = 200 mA, PWM mode
VIN = 3.9V, VOUT = 3.3V
95
IOUT = 500 mA, PWM mode
VIN = 3.6V to 4.2V,
LINE
Line transient response
TR = TF = 10 µs,
50
TR
IOUT = 100 mA, VOUT = 0.8V
mVp
VIN = 3.1V/3.6V/4.5V,
k
LOA
VOUT = 0.8V,
Load transient response
50
D TR
IOUT = 50 mA to 150 mA
TR = TF = 0.1 µs
(1)
Linearity limits are ±3% or ±50 mV whichever is larger.
Copyright © 2009–2013, Texas Instruments Incorporated
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5
Product Folder Links: LM3241



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