參數(shù)資料
型號(hào)： LTC1735CS
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 3 A SWITCHING CONTROLLER, 335 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, PLASTIC, SO-16
文件頁數(shù)： 3/32頁
文件大小： 373K
代理商： LTC1735CS
3
LTC1735
SYMBOL
I
SENSE
t
ON(MIN)
PARAMETER
Sense Pins Total Source Current
Minimum On-Time
TG Transition Time:
Rise Time
Fall Time
BG Transition Time:
Rise Time
Fall Time
Top Gate Off to Synchronous
Gate On Delay Time
Synchronous Gate Off to Top
Gate On Delay Time
CONDITIONS
V
SENSE–
= V
SENSE+
= 0V
Tested with a Square Wave (Note 6)
(Note 7)
C
LOAD
= 3300pF
C
LOAD
= 3300pF
(Note 7)
C
LOAD
= 3300pF
C
LOAD
= 3300pF
C
LOAD
= 3300pF Each Driver
MIN
TYP
60
160
MAX
80
200
UNITS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LTC1735CS, LTC1735IS: T
J
= T
A
+ (P
D
110
°
C/W)
LTC1735CGN, LTC1735IGN: T
J
= T
A
+ (P
D
130
°
C/W)
Note 3:
The LTC1735 is tested in a feedback loop that servos V
OSENSE
to
the balance point for the error amplifier (V
ITH
= 1.2V).
Note 4:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 5:
Oscillator frequency is tested by measuring the C
OSC
charge
current (I
OSC
) and applying the formula:
f
C
pF
(
I
I
OSC
OSC
CHG
DIS
=
+
+
8 477 10
.
11
1
1
11
1
(
)
)
–
Note 6:
The minimum on-time condition corresponds to an inductor peak-
to-peak ripple current
≥
40% of I
MAX
(see Minimum On-Time
Considerations in the Applications Information section).
Note 7:
Rise and fall times are measured using 10% and 90% levels.
Delay times are measured using 50% levels.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 15V, V
RUN/SS
= 5V unless otherwise noted.
The
G
denotes specifications which apply over the full operating
μ
A
ns
TG t
r
TG t
f
50
50
90
90
ns
ns
BG t
r
BG t
f
TG/BG t
1D
50
40
100
90
80
ns
ns
ns
TG/BG t
2D
C
LOAD
= 3300pF Each Driver
70
ns
Internal V
CC
Regulator
V
INTVCC
V
LDO(INT)
V
LDO(EXT)
V
EXTVCC
V
EXTVCC(HYS)
Oscillator
f
OSC
f
H
/f
OSC
f
FCB(SYNC)
Internal V
CC
Voltage
Internal V
CC
Load Regulation
EXTV
CC
Drop Voltage
EXTV
CC
Switchover Voltage
EXTV
CC
Hysteresis
6V < V
IN
< 30V, V
EXTVCC
= 4V
I
CC
= 0 to 20mA, V
EXTVCC
= 4V
I
CC
= 20mA, V
EXTVCC
= 5V
I
CC
= 20mA, EXTV
CC
Ramping Positive
5.0
5.2
0.2
130
4.7
0.2
5.4
1
200
V
%
mV
G
4.5
V
V
Oscillator Frequency
Maximum Sync Frequency Ratio
FCB Pin Threshold For Sync
C
OSC
= 43pF (Note 5)
265
300
1.3
1.2
335
kHz
Ramping Negative
0.9
V
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LTC1735I RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1735CS#PBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 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:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
LTC1735CS#TR 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC 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)
LTC1735CS#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC 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)
LTC1735CS-1 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC 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)
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