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LM3671MF-1.375 데이터시트(PDF) 7 Page - Texas Instruments

부품명 LM3671MF-1.375
상세설명  LM3671, LM3671Q 2MHz, 600mA Step-Down DC-DC Converter
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LM3671
LM3671Q
www.ti.com
SNVS294P – NOVEMBER 2004 – REVISED MAY 2013
ELECTRICAL CHARACTERISTICS
(1) (2) (3)
Limits in standard typeface are for TJ = 25°C. Limits in boldface type apply over the entire junction temperature range for
operation,
−40°C to +125°C. Unless otherwise noted, specifications apply to the LM3671MF/TL/LC with VIN = EN = 3.6V
Symbol
Parameter
Condition
Min
Typ
Max
Units
VIN
Input Voltage
(4)
2.7
5.5
V
Feedback Voltage (Fixed) MF
−4
+4
Feedback Voltage (Fixed) TL
PWM mode (5)
−2.5
+2.5
%
Feedback Voltage (Fixed) LC
−4
+4
Feedback Voltage (ADJ) MF
−4
+4
(6)
PWM mode (5)
%
VFB
Feedback Voltage (ADJ) TL
−2.5
+2.5
2.7V
≤ VIN ≤ 5.5V
Line Regulation
0.031
%/V
IO = 10 mA
100 mA
≤ IO ≤ 600 mA
Load Regulation
0.0013
%/mA
VIN= 3.6V
VREF
Internal Reference Voltage
0.5
V
ISHDN
Shutdown Supply Current
EN = 0V
0.01
1
µA
No load, device is not switching (FB
IQ
DC Bias Current into VIN
forced higher than programmed
16
35
µA
output voltage)
RDSON (P)
Pin-Pin Resistance for PFET
VIN= VGS= 3.6V
380
500
m
RDSON (N)
Pin-Pin Resistance for NFET
VIN= VGS= 3.6V
250
400
m
ILIM
Switch Peak Current Limit
Open Loop (7)
830
1020
1150
mA
VIH
Logic High Input
1.0
V
VIL
Logic Low Input
0.4
V
IEN
Enable (EN) Input Current
0.01
1
µA
FOSC
Internal Oscillator Frequency
PWM Mode (5)
1.6
2
2.6
MHz
(1)
All voltages are with respect to the potential at the GND pin.
(2)
Min and Max limits are specified by design, test or statistical analysis. Typical numbers are not specified, but do represent the most
likely norm.
(3)
The parameters in the electrical characteristic table are tested at VIN= 3.6V unless otherwise specified. For performance over the input
voltage range refer to datasheet curves.
(4)
The input voltage range recommended for ideal applications performance for the specified output voltages are given below:VIN = 2.7V to
4.5V for 1.1V
≤ VOUT < 1.5VVIN = 2.7V to 5.5V for 1.5V ≤ VOUT < 1.8VVIN = (VOUT+ VDROPOUT) to 5.5V for 1.8V ≤ VOUT ≤ 3.3Vwhere
VDROPOUT = ILOAD *( RDSON, PFET + RINDUCTOR)
(5)
Test condition: for VOUT less than 2.5V, VIN = 3.6V; for VOUT greater than or equal to 2.5V, VIN = VOUT+ 1V.
(6)
ADJ version is configured to 1.5V output. For ADJ output version: VIN = 2.7V to 4.5V for 0.90V ≤ VOUT < 1.1VVIN = 2.7V to 5.5V for 1.1V
≤ VOUT < 3.3V
(7)
Refer to datasheet curves for closed loop data and its variation with regards to supply voltage and temperature. Electrical Characteristic
table reflects open loop data (FB=0V and current drawn from SW pin ramped up until cycle by cycle current limit is activated). Closed
loop current limit is the peak inductor current measured in the application circuit by increasing output current until output voltage drops
by 10%.
DISSIPATION RATING TABLE
θJA
TA≤ 25°C
TA= 60°C
TA= 85°C
Power Rating
Power Rating
Power Rating
130°C/W (4 layer board) SOT-23
770 mW
500 mW
310 mW
85°C/W (4 layer board) 5-bump
1179 mW
765 mW
470 mW
DSBGA
165°C/W (4 layer board) 6-pin
606 mW
394 mW
242 mW
USON
Copyright © 2004–2013, Texas Instruments Incorporated
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