參數(shù)資料
型號(hào)： LTC1873EG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Quadruple 2-Input Positive-AND Gate 14-TSSOP -40 to 85
中文描述： 5 A SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.209 INCH, PLASTIC, SSOP-28
文件頁數(shù)： 3/32頁
文件大?。?/td> 308K
代理商： LTC1873EG
3
LTC1873
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC1873 is 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 3:
PV
CC
and BV
CC
(V
BOOST
– V
SW
) must be greater than V
GS(ON)
of
the external MOSFETs used to ensure proper operation.
Note 4:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C.
V
CC
= 5V unless otherwise specified. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
Switching Characteristics
V
OSC
Oscillator Amplitude
f
OSC
Oscillator Frequency
Test Circuit 1
Φ
OSC2
Controller 2 Oscillator Phase
Relative to Controller 1
DC
MIN1
Minimum Duty Cycle
V
FB
< V
MAX
DC
MIN2
Minimum Duty Cycle
V
FB
> V
MAX
DC
MAX
Maximum Duty Cycle
t
NOV
Driver Nonoverlap
Test Circuit 1 (Note 9)
t
r
, t
f
Driver Rise/Fall Time
Test Circuit 1 (Note 9)
Feedback Amplifier
A
VFB
FB DC Gain
GBW
FB Gain Bandwidth
I
ERR
FB Sink/Source Current
COMP
N
Output
V
MIN
MIN Comparator Threshold
V
MAX
MAX Comparator Threshold
Current Limit Loop
A
VILIM
I
LIM
Gain
I
IMAX
I
MAX
Source Current
I
MAX
= 0V
Status Outputs
V
FAULT
FAULT Trip Point
V
FB
Relative to Regulated V
OUT
V
OLF
FAULT Output Low Voltage
I
FAULT
= 1mA
I
FAULT
FAULT Output Current
V
FAULT
= 0V
t
FAULT
FAULT Delay Time
V
FB
> V
FAULT
to FAULT (Note 9)
VID Inputs
R1
Resistance Between SENSE and FB1
Side 1 Only
V
OUT
Error %
Output Voltage Accuracy
Programmed from 1.3V to 3.5V
R
PULLUP
VID Input Pull-Up Resistance
V
DIODE
= 0.6V (Note 8)
VID
T
VID Input Voltage Threshold
V
IL
(2.7V
≤
V
CC
≤
5.5V)
V
IH
(2.7V
≤
V
CC
≤
5.5V)
I
VID-LEAK
VID Input Leakage Current
V
CC
< VID < 7V (Note 8)
V
PULLUP
VID Pull-Up Voltage
V
CC
= 3.3V
V
CC
= 5V
Note 5:
Supply current in normal operation is dominated by the current
needed to charge and discharge the external MOSFET gates. This current
will vary with supply voltage and the external MOSFETs used.
Note 6:
Supply current in shutdown is dominated by external MOSFET
leakage and may be significantly higher than the quiescent current drawn
by the LTC1873, especially at elevated temperature.
Note 7:
Feedback current at FB1 will be higher due to internal VID
resistors.
Note 8:
Each built-in pull-up resistor attached to the VID inputs also has a
series diode connected to V
CC
to allow input voltages higher than the V
CC
supply without damage or clamping. (See Block Diagram.)
Note 9:
Rise and fall times are measured at 20% to 80% levels. Delay and
nonoverlap times are measured using 50% levels.
ELECTRICAL CHARACTERISTICS
MIN
TYP
MAX
UNITS
1
V
P-P
kHz
DEG
G
475
550
180
10
750
G
7
0
%
%
%
ns
ns
G
G
87
90
40
12
93
100
80
G
G
G
74
85
25
±
10
760
840
dB
MHz
mA
mV
mV
G
±
3
G
785
G
815
40
–10
dB
μ
A
G
–7
–14
G
+10
+15
0.03
–10
25
+20
0.1
%
V
μ
A
μ
s
G
20
k
%
k
G
–1.5
1.5
40
0.4
V
V
1.6
0.01
2.8
4.5
±
1
μ
A
V
V
相關(guān)PDF資料
PDF描述
LTC1873 Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID(550kHz,雙 路,同步2相開關(guān)穩(wěn)壓器(帶5位VID))
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1873EG#PBF 功能描述:IC REG CTRLR BUCK PWM VM 28-SSOP RoHS:是 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
LTC1873EG#TR 功能描述:IC REG CTRLR BUCK PWM VM 28-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
LTC1873EG#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 28-SSOP RoHS:是 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
LTC1874EGN 功能描述:IC REG CTRLR BUCK PWM CM 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:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 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:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1874EGN#PBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 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:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 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:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
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