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參數(shù)資料
| 型號： | LM3691TLX-3.3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.7 A SWITCHING REGULATOR, 4400 kHz SWITCHING FREQ-MAX, PBGA6 |
| 封裝： | MICRO, SMD-6 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 1921K |
| 代理商： | LM3691TLX-3.3 |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
If Military/Aerospace specified devices are required, please
contact the National Semiconductor Sales Office/Distributors
for availability and specifications.
V
IN Pin to GND
0.2V to 6.0V
EN, MODE, FB, SW pins
(GND0.2V) to
V
IN + 0.2V
Junction Temperature (T
J-MAX)
+150°C
Storage Temperature Range
65°C to +150°C
Continuous Power Dissipation
(Note 3)
Internally Limited
Maximum Lead Temperature
(Soldering, 10 sec.)
260°C
ESD Rating (Note 4)
Human Body Model
2 kV
Machine Model
200V
Input Voltage Range
2.3V to 5.5V
Recommended Load Current
0 mA to 1000 mA
Junction Temperature (T
J) Range
30°C to +125°C
Ambient Temperature (T
A) Range (Note
30°C to +85°C
Thermal Properties
Junction-to-Ambient Thermal
Resistance (
θ
JA) (Note 6)
(micro SMD)
85°C/W
A = 25°C. Limits in
boldface
type apply over the operating ambient temperature range (30°C
≤ T
A= TJ ≤ +85°C). Unless otherwise noted,
specifications apply to the LM3691 open loop Typical Application Circuit with V
IN = EN = 3.6V.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
FB
Feedback Voltage
PWM Mode. No load V
OUT = 1.1V to 3.3V
-1
+1
%
PWM Mode. No load V
OUT = 0.75V to 1.0V
-10
+10
mV
I
SHDN
Shutdown Supply Current
EN = 0V
0.03
1
A
I
Q_ECO
ECO Mode I
q
ECO Mode
64
80
A
I
Q_PWM
PWM Mode I
q
PWM Mode
490
600
A
R
DSON (P)
Pin-Pin Resistance for PFET
V
IN = VGS = 3.6V, IO = 200 mA
160
250
m
R
DSON (N)
Pin-Pin Resistance for NFET
V
IN = VGS = 3.6V, IO = 200 mA
115
180
m
I
LIM
Switch Peak Current Limit
Open loop
1250
1500
1700
mA
V
IH
Logic High Input
1.2
V
IL
Logic Low Input
0.4
V
I
EN,MODE
Input Current
0.01
1
A
F
SW
Switching Frequency
PWM Mode
3.6
4
4.4
MHz
V
ON
UVLO threshold (Note 10)
V
IN rising
2.2
2.29
V
IN falling
2.1
V
T
STARTUP
Start Time (Note 9)
70
145
300
s
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation
of the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions,
see the Electrical Characteristics tables.
Note 2:
All voltages are with respect to the potential at the GND pin.
Note 3:
Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
J = 150°C (typ.) and disengages at TJ
= 130°C (typ.).
Note 4:
The Human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. The machine model is a 200 pF capacitor discharged
directly into each pin. MIL-STD-883 3015.7
Note 5:
In applications where high power dissipation and/or poor package resistance is present, the maximum ambient temperature may have to be derated.
Maximum ambient temperature (T
A-MAX) is dependent on the maximum operating junction temperature (TJ-MAX), the maximum power dissipation of the device in
the application (P
D-MAX) and the junction to ambient thermal resistance of the package (θJA) in the application, as given by the following equation: TA-MAX = TJ-MAX
(θ
JAx PD-MAX). Due to the pulsed nature of testing the part, the temp in the Electrical Characteristic table is specified as TA = TJ.
Note 6:
Junction-to-ambient thermal resistance is highly application and board layout dependent. In applications where high power dissipation exists, special
care must be given to thermal dissipation issues in board design.
Note 7:
Min and Max limits are guaranteed by design, test or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.
Note 8:
The parameters in the electrical characteristic table are tested under open loop conditions at V
IN = 3.6V unless otherwise specified. For performance
over the input voltage range and closed loop condition, refer to the datasheet curves.
Note 9:
Not tested in production, guaranteed by design.
Note 10:
The UVLO rising threshold minus the falling threshold is always positive.
www.national.com
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LM3691
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