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LM3205TLX/NOPB 데이터시트(PDF) 5 Page - Texas Instruments

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부품명 LM3205TLX/NOPB
상세설명  Miniature, Adjustable, Step-Down DC-DC Converter
PDF  28 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

LM3205TLX/NOPB 데이터시트(HTML) 5 Page - Texas Instruments

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LM3205
www.ti.com
SNVS388E – JULY 2005 – REVISED APRIL 2013
SYSTEM CHARACTERISTICS
The following spec table entries are specified by design providing the component values in the typical application circuit are
used. These parameters are not specified by production testing. Min and Max limits apply over the full operating ambient
temperature range (
−30°C ≤ TA ≤ 85°C) and over the VIN range = 2.7V to 5.5V, TA = 25°C, PVIN = VDD = EN = 3.6V, L =
3.3µH, DCR of L
≤ 100mΩ, CIN = 10µF, 0603, 6.3V (4.7µF||4.7µF, 0603, 6.3V can be used), COUT = 4.7µF, 0603, 6.3V for
LM3205TL/LM3205SD unless otherwise noted.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
TRESPONSE
Time for VOUT to rise from 0.8V
VIN = 4.2V, COUT = 4.7µF, L = 3.3µH,
20
30
µs
to 3.6V
RLOAD = 5.5Ω
Time for VOUT to fall from 3.6V to VIN = 4.2V, COUT = 4.7µF, L = 3.3µH,
20
30
µs
0.8V
RLOAD = 10Ω
CCON
VCON input capacitance
VCON = 1V,
20
pF
Test frequency = 100 kHz
Linearity
Linearity in control
VIN = 3.9V
-3
+3
%
range 0.32V to 1.44V
Monotonic in nature
ICON
Control pin input current
-10
10
µA
TON
Turn on time
EN = Low to High, VIN = 4.2V, VO = 3.6V,
(time for output to reach 3.6V
COUT = 4.7µF, IOUT ≤ 1mA
70
100
µs
from Enable low to high
transition)
η
Efficiency
VIN = 3.6V, VOUT = 0.8V, IOUT = 90mA
83
%
(L = 3.3µH, DCR
≤ 100mΩ)
VIN = 4.2V, VOUT = 3.4V, IOUT = 400mA
96
%
VOUT_ripple Ripple voltage, PWM mode
VIN = 3V to 4.5V, VOUT = 0.8V, IOUT =
10
mVp-p
10mA to 400mA(1)
Line_tr
Line transient response
VIN = 600mV perturbance,
TRISE = TFALL = 10µs, VOUT = 0.8V, IOUT =
50
mVpk
100mA
Load_tr
Load transient response
VIN = 3.1/3.6/4.5V, VOUT = 0.8V, transients
50
mVpk
up to 100mA, TRISE = TFALL = 10µs
PSRR
VIN = 3.6V, VOUT = 0.8V, IOUT =
sine wave perturbation
40
dB
100mA
frequency = 10kHz, amplitude = 100mVp-p
(1)
Ripple voltage should measured at COUT electrode on good layout PC board and under condition using suggested inductors and
capacitors.
Copyright © 2005–2013, Texas Instruments Incorporated
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