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LM3670MFX-1.2 Arkusz danych(PDF) 5 Page - Texas Instruments

Numer części LM3670MFX-1.2
Szczegółowy opis  LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
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LM3670MFX-1.2 Arkusz danych(HTML) 5 Page - Texas Instruments

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LM3670
www.ti.com
SNVS250E – NOVEMBER 2004 – REVISED FEBRUARY 2013
Electrical Characteristics
Limits in standard typeface are for TJ = 25°C. Limits in boldface type apply over the full operating junction temperature range
(
−40°C ≤ TJ ≤ +125°C). Unless otherwise noted VIN = 3.6V, VOUT = 1.8V, IO = 150mA, EN = VIN
Symbol
Parameter
Condition
Min
Typ
Max
Units
VIN
Input Voltage Range
(1)
2.5
5.5
V
VOUT
Fixed Output Voltage: 1.2V
2.5V
≤ VIN ≤ 5.5V
-2.0
+4.0
%
IO = 10 mA
2.5V
≤ VIN ≤ 5.5V
-4.5
+4.0
0 mA
≤ IO ≤ 150 mA
Fixed Output Voltage: 1.5V
2.5V
≤ VIN ≤ 5.5V
-2.5
+4.0
%
IO = 10 mA
2.5V
≤ VIN ≤ 5.5V
-5.0
+4.0
0 mA
≤ IO ≤ 350 mA
Fixed Output Voltage: 1.6V,
2.5V
≤ VIN ≤ 5.5V
-2.5
+4.0
%
1.875V
IO = 10 mA
2.5V
≤ VIN ≤ 5.5V
-5.5
+4.0
0 mA
≤ IO ≤ 350 mA
Fixed Output Voltage: 1.8V
2.5V
≤ VIN ≤ 5.5V
-1.5
+3.0
%
IO = 10 mA
2.5V
≤ VIN ≤ 5.5V
−4.5
+3.0
0 mA
≤ IO ≤ 350 mA
Fixed Output Voltage: 2.5V, 3.3V
3.6V
≤ VIN ≤ 5.5V
-2.0
+4.0
%
IO = 10 mA
3.6V
≤ VIN ≤ 5.5V
-6.0
+4.0
0 mA
≤ IO ≤ 350 mA
Adjustable Output Voltage
2.5V
≤ VIN ≤ 5.5V
-2.5
+4.5
%
(2)
IO = 10 mA
2.5V
≤ VIN ≤ 5.5V
-4.0
+4.5
0 mA
≤ IO ≤ 150 mA
Line_reg
Line Regulation
2.5V
≤ VIN ≤ 5.5V
0.26
%/V
IO = 10 mA
Load_reg
Load Regulation
150 mA
≤ IO ≤ 350 mA
0.0014
%/mA
VREF
Internal Reference Voltage
0.5
V
IQ_SHDN
Shutdown Supply Current
TA=85ºC
0.1
1
µA
IQ
DC Bias Current into VIN
No load, device is not switching
15
30
µA
(VOUT forced higher than
programmed output voltage)
VUVLO
Minimum VIN below which VOUT
V
2.4
will be disabled
RDSON (P)
Pin-Pin Resistance for PFET
VIN=VGS=3.6V
360
690
m
RDSON (N)
Pin-Pin Resistance for NFET
VIN=VGS=3.6V
250
660
m
ILKG (P)
P Channel Leakage Current
VDS=5.5V
0.1
1
µA
ILKG (N)
N Channel Leakage Current
VDS=5.5V
0.1
1.5
µA
ILIM
Switch Peak Current Limit
400
620
750
mA
η
Efficiency
ILOAD = 1 mA
91
(VIN = 3.6V, VOUT = 1.8V)
ILOAD = 10 mA
94
ILOAD = 100 mA
94
%
ILOAD = 200 mA
94
ILOAD = 300 mA
92
ILOAD = 350 mA
90
VIH
Logic High Input
1.3
V
VIL
Logic Low Input
0.4
V
(1)
The input voltage range recommended for the specified output voltages are given below: VIN = 2.5V to 5.5V for 0.7V ≤ VOUT <
1.875VVIN = ( VOUT + VDROP OUT) to 5.5V for 1.875 ≤ VOUT≤ 3.3VWhere VDROP OUT = ILOAD * (RDSON (P) + RINDUCTOR)
(2)
Output voltage specification for the adjustable version includes tolerance of the external resistor divider.
Copyright © 2004–2013, Texas Instruments Incorporated
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