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参数资料
| 型号： | LT3751IFE#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封装： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20 |
| 文件页数： | 19/34页 |
| 文件大小： | 403K |
| 代理商： | LT3751IFE#TRPBF |
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LT3751
26
3751fb
TYPICAL APPLICATIONS
Efciency (VOUT = 500V)
Load Regulation (VOUT = 500V)
Steady-State Operation with
100mA Load Current
High Voltage Regulator
CHARGE
CLAMP
VCC
DONE
FAULT
UVLO1
OVLO1
UVLO2
OVLO2
RDCM
RVOUT
HVGATE
LVGATE
CSP
CSN
FB
RVTRANS
T1*
1:10
D1
VOUT
100V TO 500V
VTRANS
5V TO 24V
VCC
3751 TA04
LT3751
GND RBG
R6
40.2k
OFF ON
C3
680μF
C2
5 2.2μF
C1
10μF
R7, 18.2k
R8, 40.2k
M1*
R5
6mΩ
+
C4***
100μF
R9
VTRANS
VCC
R2, 475k
R1, 69.8k
R4, 475k
R3, 69.8k
C1: 25V X5R OR X7R CERAMIC
C2: 25V X5R OR X7R CERAMIC
C3: 25V ELECTROLYTIC
C5: TDK CKG57NX7R2J474M
D1: VISHAY US1M 1000V
M1: FAIRCHILD FQP34N20L
R1 THRU R4, R6 THRU R9, R11: USE 1% 0805
R5: IRC LR SERIES 2512 RESISTORS
R10: USE 200V 1206 RESISTOR(S)
T1: COILCRAFT GA3459-AL
TO
MICRO
VCC
5V TO 24V
C5
0.47μF
R11
R10**
DANGER HIGH VOLTAGE! OPERATION BY HIGH VOLTAGE TRAINED PERSONNEL ONLY
C6
10nF
* M1 AND T1 REQUIRE PROPER
HEATSINK/THERMAL DISSIPATION
TO MEET MANUFACTURER’S SPECIFICATIONS
** DEPENDING ON DESIRED OUTPUT VOLTAGES,
R10 MUST BE SPLIT INTO MULTIPLE RESISTORS,
TO MEET MANUFACTURER’S VOLTAGE SPECIFICATION.
***C4 MUST BE SIZED TO MEET LARGE SIGNAL
STABILITY CRITERIA DESCRIBED IN THE
APPLICATIONS INFORMATION SECTION
10μs/DIV
3751 TA03b
VDRAIN
50V/DIV
IPRI
10A/DIV
VOUT
AC COUPLED
2V/DIV
ILOAD (mA)
0
EFFICIENCY
(%)
90
85
75
80
70
65
60
200
3751 TA03c
100
150
50
VTRANS = 24V
VTRANS = 12V
VTRANS = 5V
ILOAD (mA)
0
OUTPUT
VOL
TAGE
(V)
515
510
505
500
495
200
3751 TA03d
100
150
50
VTRANS = 24V
VTRANS = 12V
VTRANS = 5V
10μs/DIV
3751 TA03e
VDRAIN
50V/DIV
IPRI
10A/DIV
VOUT
COUPLED
2V/DIV
Steady-State Operation with
1.1mA Load Current
Suggested Component Values
VOUT
(V)
IOUT(MAX) (mA)
AT VTRANS = 5V,
5% VOUT DEFLECTION
IOUT(MAX) (mA)
AT VTRANS = 24V,
5% VOUT DEFLECTION
R9
(kΩ)
R11
(kΩ)
R10
(kΩ)
100
180
270
3.32
0.383
30.9
200
110
315
1.65
0.768
124
300
75
245
1.10
1.13
274
400
55
200
0.825
1.54
499
500
40
170
Tie to GND
1.74
715
Transformer primary inductance limits VOUT comparator operation to VOUT = 400VMAX. RVOUT
and RBG should be tied to ground when operating VOUT above 400V.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3751IUFD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Capacitor Charger Controller with Regulation |
| LT3751IUFD#PBF | 功能描述:IC CTRLR CAP CHRGR 4.75V 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LT3751IUFD#TRPBF | 功能描述:IC CTRLR CAP CHRGR 4.75V 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LT3751IUFD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Capacitor Charger Controller with Regulation |
| LT3751IUFD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Capacitor Charger Controller with Regulation |
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