參數(shù)資料
型號： LM3311SQX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch
中文描述： 2.6 A SWITCHING REGULATOR, 1280 kHz SWITCHING FREQ-MAX, QCC24
封裝： LLP-24
文件頁數(shù)： 7/29頁
文件大?。?/td> 2052K
代理商： LM3311SQX
Electrical Characteristics
(Continued)
Specifications in standard type face are for T
= 25C and those with
boldface type
apply over the full
Operating Tempera-
ture Range
( T
J
= 40C to +125C). Unless otherwise specified, V
IN
= LV
IN
= 2.5V and I
L
= 0A.
Symbol
Parameter
Conditions
Min
(Note 5)
2.5
Typ
(Note 6)
2.4
2.3
2.7
Max
(Note 5)
Units
UVP
Undervoltage Protection
Threshold
On Threshold (Switch On)
Off Threshold (Switch Off)
FREQ = V
IN
= 2.5V
V
2.1
13.5
I
FREQ
FREQ Pin Current
μA
Electrical Characteristics
Specifications in standard type face are for T
= 25C and those with
boldface type
apply over the full
Operating Tempera-
ture Range
( T
J
= 40C to +125C). Unless otherwise specified V
IN
= LV
IN
= 2.5V and AV
IN
= 8V.
Operational Amplifier
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 6)
Max
(Note 5)
Units
V
OS
Input Offset Voltage
Buffer configuration, V
O
=
AV
IN
/2, no load
Buffer configuration, V
O
=
AV
IN
/2, no load (Note 9)
Buffer, R
L
=2k
, V
O
min.
Buffer, R
L
=2k
, V
O
max.
5.7
15
mV
I
B
Input Bias Current (POS Pin)
200
550
nA
V
OUT
Swing
0.001
7.97
0.03
V
7.9
4
AV
IN
Is+
I
OUT
Supply Voltage
Supply Current
Output Current
12
7.8
195
175
V
Buffer, V
O
= AV
IN
/2, No Load
Source
Sink
1.5
138
135
mA
90
105
mA
Electrical Characteristics
Specifications in standard type face are for T
= 25C and those with
boldface type
apply over the full
Operating Tempera-
ture Range
( T
J
= 40C to +125C). Unless otherwise specified V
IN
= LV
IN
= 2.5V.
Gate Pulse Modulation
Symbol
Parameter
Conditions
Min
(Note 5)
Typ
(Note 6)
Max
(Note 5)
1.4
Units
VFLK
VFLK Voltage Levels
Rising edge threshold
Falling edge threshold
Rising edge threshold
Falling edge threshold
VGHM = 30V
VGHM = 5V
VFLK = 1.5V
VFLK = 0.3V
VDPM = 1.5V
VDPM = 0.3V
VGH = 30V, VFLK High
VGH = 30V, VFLK Low
20mA Current, VGH = 30V
20mA Current, VGH = VGHM
= 30V
VDPM is Low, VGHM = 2V
CE = 0V
V
0.4
VDPM
VDPM Voltage Levels
1.4
V
0.4
2.8
0.4
V
DD(TH)
V
DD
Threshold
3
3.3
0.7
11
2.5
11
2.5
300
35.5
28.5
V
0.5
4.8
1.1
4.8
1.1
59
11
14
I
VFLK
VFLK Current
μA
I
VDPM
VDPM Current
μA
I
VGH
VGH Bias Current
μA
R
VGH-VGHM
R
VGHM-RE
VGH to VGHM Resistance
VGHM to RE Resistance
27
55
R
VGHM(OFF)
I
CE
V
CE(TH)
VGH Resistance
CE Current
CE Voltage Threshold
1.2
57
1.22
1.7
71
1.30
k
μA
V
40
1.16
L
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