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LM3691TL-2.5 数据表(PDF) 6 Page - Texas Instruments

部件名 LM3691TL-2.5
功能描述  High-Accuracy, Miniature 1-A Step-Down DC-DC Converter
Download  29 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM3691TL-2.5 数据表(HTML) 6 Page - Texas Instruments

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LM3691
SNVS506J – MAY 2008 – REVISED DECEMBER 2015
www.ti.com
7.5 Electrical Characteristics
Unless otherwise specified, specifications apply to the LM3691 open-loop Typical Application Circuit with VIN = EN = 3.6 V;
typical limits are for TA = 25°C and minimum and maximum limits apply over the operating ambient temperature range (−30°C
≤ TA = TJ ≤ +85°C).
(1) (2) (3)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PWM mode
–1%
1%
no load VOUT = 1.1 V to 3.3 V
VFB
Feedback voltage
PWM mode
–10
10
mV
no load VOUT = 0.75 V to 1 V
ISHDN
Shutdown supply current
EN = 0 V
0.03
1
µA
IQ_ECO
ECO mode IQ
ECO mode
64
80
µA
IQ_PWM
PWM mode IQ
PWM mode
490
600
µA
RDSON (P)
Pin-pin resistance for PFET
VIN = VGS = 3.6 V, IO = 200 mA
160
250
m
RDSON (N)
Pin-pin resistance for NFET
VIN = VGS = 3.6 V, IO = −200 mA
115
180
m
ILIM
Switch peak current limit
Open loop
1250
1500
1700
mA
VIH
Logic high input
1.2
V
VIL
Logic low input
0.4
V
IEN,MODE
Input current
0.01
1
µA
FSW
Switching frequency
PWM mode
3.6
4
4.4
MHz
VIN rising, TA = 25°C
2.2
2.29
V
VON
UVLO threshold(4)
VIN falling
2.1
V
TSTARTUP
Start time(5)
TA = 25°C
70
145
300
µs
(1)
All voltages are with respect to the potential at the GND pin.
(2)
Minimum and maximum limits are specified by design, test or statistical analysis. Typical numbers represent the most likely norm.
(3)
The parameters in the electrical characteristic table are tested under open-loop conditions at VIN = 3.6 V unless otherwise specified. For
performance over the input voltage range and closed loop condition, refer to the datasheet curves.
(4)
The UVLO rising threshold minus the falling threshold is always positive.
(5)
Specified by design. Not production tested.
6
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Product Folder Links: LM3691


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