參數(shù)資料
型號(hào)： LTC3717
廠商： Linear Technology Corporation
英文描述： Wide Operating Range, No RSENSE Step-Down Controller for DDR/QDR Memory Termination
中文描述： 寬工作，無檢測(cè)電阻步幅度型控制器用于DDR / QDR存儲(chǔ)器終端
文件頁數(shù)： 2/20頁
文件大?。?/td> 255K
代理商： LTC3717
2
LTC3717
sn3717 3717fs
(Note 1)
Input Supply Voltage (V
CC
, I
ON
).................36V to –0.3V
Boosted Topside Driver Supply Voltage
(BOOST) ................................................... 42V to –0.3V
SW Voltage.................................................. 36V to –5V
EXTV
CC
, (BOOST – SW), RUN/SS,
PGOOD Voltages....................................... 7V to –0.3V
V
REF
, V
RNG
Voltages ...............(INTV
CC
+ 0.3V) to –0.3V
I
TH
, V
FB
Voltages...................................... 2.7V to –0.3V
TG, BG, INTV
CC
, EXTV
CC
Peak Currents.................... 2A
TG, BG, INTV
CC
, EXTV
CC
RMS Currents .............. 50mA
Operating Ambient Temperature
Range (Note 4)................................... –40
°
C to 85
°
C
Junction Temperature (Note 2)............................ 125
°
C
Storage Temperature Range................. –65
°
C to 150
°
C
Lead Temperature (Soldering, 10 sec)..................300
°
C
ORDER PART
NUMBER
LTC3717EGN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
T
JMAX
= 125
°
C,
θ
JA
= 130
°
C/W
The
G
denotes specifications which apply over the full operating
temperature range, otherwise specifications are T
A
= 25
°
C. V
CC
= 15V unless otherwise noted.
SYMBOL
PARAMETER
Main Control Loop
I
Q
Input DC Supply Current
Normal
Shutdown Supply Current
V
FB
Feedback Voltage Accuracy
V
FB(LINEREG)
Feedback Voltage Line Regulation
V
FB(LOADREG)
Feedback Voltage Load Regulation
g
m(EA)
Error Amplifier Transconductance
t
ON
On-Time
ABSOLUTEW
W
W
U
PACKAGE/ORDER U
U
W
ELECTRICAL CHARACTERISTICS
TOP VIEW
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
RUN/SS
PGOOD
V
RNG
I
TH
SGND
I
ON
V
FB
V
REF
BOOST
TG
SW
PGND
BG
INTV
CC
V
CC
EXTV
CC
GN PART
MARKING
3717
CONDITIONS
MIN
TYP
MAX
UNITS
1000
15
2000
30
0.65
μ
A
μ
A
%
V
RUN/SS
= 0V
I
TH
= 1.2V (Note 3), V
REF
= 2.4V
V
CC
= 4V to 36V, I
TH
= 1.2V (Note 3)
I
TH
= 0.5V to 1.9V (Note 3)
I
TH
= 1.2V (Note 3)
I
ON
= 30
μ
A
I
ON
= 60
μ
A
I
ON
= 180
μ
A
I
ON
= 30
μ
A
V
RNG
= 1V, V
FB
= V
REF/2
– 50mV
V
RNG
= 0V, V
FB
= V
REF/2
– 50mV
V
RNG
= INTV
CC
, V
FB
= V
REF/2
– 50mV
V
RNG
= 1V, V
FB
= V
REF/2
+ 50mV
V
RNG
= 0V, V
FB
= V
REF/2
+ 50mV
V
RNG
= INTV
CC
, V
FB
= V
REF/2
+ 50mV
–0.65
0.002
–0.05
1.13
233
115
50
300
135
95
185
–165
–115
–235
10
–25
1.5
4
3.5
–1.2
1.8
%/V
G
–0.3
1.33
280
135
100
400
162
114
222
–190
–133
–270
12
%
0.93
186
95
mS
ns
ns
ns
ns
mV
mV
mV
mV
mV
mV
%
%
t
ON(MIN)
t
OFF(MIN)
V
SENSE(MAX)
Minimum On-Time
Minimum Off-Time
Maximum Current Sense Threshold (Source)
V
PGND
– V
SW
G
G
G
108
76
148
–140
–97
–200
8
V
SENSE(MIN)
Minimum Current Sense Threshold (Sink)
V
PGND
– V
SW
G
G
G
V
FB(OV)
V
FB(UV)
V
RUN/SS(ON)
V
RUN/SS(LE)
V
RUN/SS(LT)
I
RUN/SS(C)
I
RUN/SS(D)
Output Overvoltage Fault Threshold
Output Undervoltage Fault Threshold
RUN Pin Start Threshold
RUN Pin Latchoff Enable Threshold
RUN Pin Latchoff Threshold
Soft-Start Charge Current
Soft-Start Discharge Current
G
0.8
2
V
V
V
RUN/SS Pin Rising
RUN/SS Pin Falling
4.5
4.2
–3
3
–0.5
0.8
μ
A
μ
A
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參數(shù)描述
LTC3717-1#PBF 制造商:LINEAR 功能描述: 制造商:Linear Technology 功能描述:
LTC3717EGN 功能描述:IC STEP-DWN CONTRLR SYNC 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
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LTC3717EGN#TR 功能描述:IC STEP-DWN CONTRLR SYNC 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC3717EGN#TRPBF 功能描述:IC STEP-DWN CONTRLR SYNC 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
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