參數(shù)資料
型號： LTC3830-1ES8
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 16-Bit Bus Transceiver With 3-State Outputs 56-BGA MICROSTAR JUNIOR -40 to 85
中文描述： SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8
封裝： 0.150 INCH, PLASTIC, SO-8
文件頁數(shù)： 3/24頁
文件大?。?/td> 305K
代理商： LTC3830-1ES8
3
LTC3830/LTC3830-1
sn3830 3830fs
SYMBOL
I
VCC
PARAMETER
Supply Current
CONDITIONS
Figure 2, V
SHDN
= V
CC
V
SHDN
= 0V
Figure 2, V
SHDN
= V
CC
(Note 3)
V
SHDN
= 0V
FREQSET Floating
MIN
TYP
0.7
1
14
0.1
200
1.2
2.2
2.85
10
55
MAX
1.6
10
20
10
250
UNITS
mA
G
G
μ
A
mA
μ
A
kHz
I
PVCC
PV
CC
Supply Current
G
G
f
OSC
V
SAWL
V
SAWH
V
COMPMAX
f
OSC
/
I
FREQSET
A
V
Internal Oscillator Frequency
V
COMP
at Minimum Duty Cycle
V
COMP
at Maximum Duty Cycle
Maximum V
COMP
Frequency Adjustment
Error Amplifier Open-Loop DC Gain
G
160
V
V
V
V
FB
= 0V, PV
CC1
= 8V
kHz/
μ
A
Measured from FB to COMP,
SENSE
+
and SENSE
–
Floating, (Note 4)
Measured from FB to COMP,
SENSE
+
and SENSE
–
Floating, (Note 4)
G
46
dB
g
m
Error Amplifier Transconductance
G
520
650
780
μ
mho
I
COMP
I
MAX
Error Amplifier Output Sink/Source Current
I
MAX
Sink Current
100
12
12
3300
μ
A
μ
A
μ
A
V
IMAX
= V
CC
(Note 10)
V
IMAX
= V
CC
(Note 6)
9
4
15
20
G
I
MAX
Sink Current Tempco
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
Soft-Start Source Current
Maximum Soft-Start Sink Current
In Current Limit
SENSE Input Resistance
SENSE to FB Resistance
Driver Rise/Fall Time
Driver Nonoverlap Time
Maximum G1 Duty Cycle
ppm/
°
C
V
IH
V
IL
I
IN
I
SS
I
SSIL
G
2.4
V
V
G
0.8
1
–16
V
SHDN
= V
CC
V
SS
= 0V, V
IMAX
= 0V, V
IFB
= V
CC
V
IMAX
= V
CC
, V
IFB
= 0V,
V
SS
= V
CC
(Note 8), PV
CC1
= 8V
G
0.1
–12
1.6
μ
A
μ
A
mA
G
–8
R
SENSE
R
SENSEFB
t
r
, t
f
t
NOV
DC
MAX
29.2
18
80
120
95
k
k
ns
ns
%
Figure 2, PV
CC1
= PV
CC2
= 5V (Note 5)
Figure 2, PV
CC1
= PV
CC2
= 5V (Note 5)
Figure 2, V
FB
= 0V (Note 5), PV
CC1
= 8V
G
250
250
G
25
91
G
The
G
denotes specifications that apply over the full operating temperature
range, otherwise specifications are at T
A
= 25
°
C. V
CC
, PV
CC1
, PV
CC2
= 5V, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3:
Supply current in normal operation is dominated by the current
needed to charge and discharge the external FET gates. This will vary with
the LTC3830 operating frequency, operating voltage and the external FETs
used.
Note 4:
The open-loop DC gain and transconductance from the SENSE
+
and SENSE
–
pins to COMP pin will be (A
V
)(1.265/3.3) and (g
m
)(1.265/3.3)
respectively.
Note 5:
Rise and fall times are measured using 10% and 90% levels. Duty
cycle and nonoverlap times are measured using 50% levels.
Note 6:
Guaranteed by design, not subject to test.
Note 7:
PV
CC1
must be higher than V
CC
by at least 2.5V for the current
limit protection circuit to be active.
Note 8:
The current limiting amplifier can sink but cannot source current.
Under normal (not current limited) operation, the output current will be
zero.
Note 9:
The LTC3830E/LTC3830-1E are guaranteed to meet performance
specifications from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 10:
The minimum and maximum limits for I
MAX
over temperature
includes the intentional temperature coefficient of 3300ppm/
°
C. This
induced temperature coefficient counteracts the typical temperature
coefficient of the external power MOSFET on-resistance. This results in a
relatively flat current limit over temperature for the application.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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LTC3830EGN 功能描述:IC REG CTRLR BUCK PWM VM 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
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