Texas Instruments LM3671 Evaluation Board LM3671LC-1.8EV/NOPB LM3671LC-1.8EV/NOPB 데이터 시트
제품 코드
LM3671LC-1.8EV/NOPB
SNVS294Q – NOVEMBER 2004 – REVISED NOVEMBER 2013
ELECTRICAL CHARACTERISTICS
(1) (2) (3)
Limits in standard typeface are for T
J
= 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 V
IN
= EN = 3.6V
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
IN
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)
%
V
FB
Feedback Voltage (ADJ) TL
−2.5
+2.5
2.7V
≤ V
IN
≤ 5.5V
Line Regulation
0.031
%/V
I
O
= 10 mA
100 mA
≤ I
O
≤ 600 mA
Load Regulation
0.0013
%/mA
V
IN
= 3.6V
V
REF
Internal Reference Voltage
0.5
V
I
SHDN
Shutdown Supply Current
EN = 0V
0.01
1
µA
No load, device is not switching (FB
I
Q
DC Bias Current into V
IN
forced higher than programmed
16
35
µA
output voltage)
R
DSON (P)
Pin-Pin Resistance for PFET
V
IN
= V
GS
= 3.6V
380
500
m
Ω
R
DSON (N)
Pin-Pin Resistance for NFET
V
IN
= V
GS
= 3.6V
250
400
m
Ω
I
LIM
Switch Peak Current Limit
Open Loop
(7)
830
1020
1150
mA
V
IH
Logic High Input
1.0
V
V
IL
Logic Low Input
0.4
V
I
EN
Enable (EN) Input Current
0.01
1
µA
F
OSC
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.
likely norm.
(3)
The parameters in the electrical characteristic table are tested at V
IN
= 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:V
IN
= 2.7V to
4.5V for 1.1V
≤ V
OUT
< 1.5VV
IN
= 2.7V to 5.5V for 1.5V
≤ V
OUT
< 1.8VV
IN
= (V
OUT
+ V
DROPOUT
) to 5.5V for 1.8V
≤ V
OUT
≤ 3.3Vwhere
V
DROPOUT
= I
LOAD
*( R
DSON, PFET
+ R
INDUCTOR
)
(5)
Test condition: for V
OUT
less than 2.5V, V
IN
= 3.6V; for V
OUT
greater than or equal to 2.5V, V
IN
= V
OUT
+ 1V.
(6)
ADJ version is configured to 1.5V output. For ADJ output version: V
IN
= 2.7V to 4.5V for 0.90V
≤ V
OUT
< 1.1VV
IN
= 2.7V to 5.5V for 1.1V
≤ V
OUT
< 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%.
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
θ
JA
T
A
≤ 25°C
T
A
= 60°C
T
A
= 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
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7
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