參數(shù)資料
型號： LM5642
廠商： National Semiconductor Corporation
英文描述： High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization
中文描述： 高電壓，雙同步降壓轉(zhuǎn)換器振蕩器同步
文件頁數(shù)： 4/24頁
文件大?。?/td> 667K
代理商： LM5642
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
Voltages from the indicated pins to SGND/PGND:
VIN, ILIM1, ILIM2, KS1, KS2
SW1, SW2, RSNS1, RSNS2
0.3V to 38V
0.3 to (V
IN
+
0.3)V
FB1, FB2, VDD1, VDD2
SYNC, COMP1, COMP2, UV Delay
0.3V to 6V
0.3V to (VLIN5
+0.3)V
ON/SS1, ON/SS2 (Note 2)
0.3V to (VLIN5
+0.6)V
43V
CBOOT1, CBOOT2
CBOOT1 to SW1, CBOOT2 to SW2
LDRV1, LDRV2
0.3V to 7V
0.3V to
(VDD+0.3)V
HDRV1 to SW1, HDRV2 to SW2
0.3V
HDRV1 to CBOOT1, HDRV2 to
CBOOT2
Power Dissipation (T
A
= 25C),
(Note 3)
Ambient Storage Temperature
Range
Soldering Dwell Time, Temperature
(Note 4)
Wave
Infrared
Vapor Phase
ESD Rating (Note 5)
+0.3V
1.1W
65C to +150C
4 sec, 260C
10sec, 240C
75sec, 219C
2kV
Operating Ratings
(Note 1)
VIN (VLIN5 tied to VIN)
VIN (VIN and VLIN5 separate)
Junction Temperature
4.5V to 5.5V
5.5V to 36V
40C to +125C
Electrical Characteristics
Unless otherwise specified, V
= 28V, GND = PGND = 0V, VLIN5 = VDD1 = VDD2. Limits appearing in
boldface
type apply
over the specified operating junction temperature range, (-40C to +125C, if not otherwise specified). Specifications appearing
in plain type are measured using low duty cycle pulse testing with T
A
= 25C (Note 6), (Note 7). Min/Max limits are guaranteed
by design, test, or statistical analysis.
Symbol
System
V
OUT
/V
OUT
Parameter
Conditions
Min
Typ
Max
Units
Load Regulation
Line Regulation
Feedback Voltage
VIN = 28V, V
compx
= 0.5V to 1.5V
5.5V
≤
VIN
≤
36V, V
compx
=1.25V
5.5V
≤
VIN
≤
36V
-20C to 85C
V
ON_SSx
>
2V
5.5V
≤
VIN
≤
36V
Shutdown (Note 8)
V
ON_SS1
= V
ON_SS2
= 0V
IVLIN5 = 0 to 25mA,
5.5V
≤
VIN
≤
36V
V
IN
= 6V
0.04
0.04
1.2364
1.2364
%
%
V
FB1_FB2
1.2154
1.2179
1.2574
1.2549
V
I
VIN
Input Supply Current
1.1
2.0
mA
50
110
μA
VLIN5
VLIN5 Output Voltage
4.70
5
5.30
V
V
CLos
Current Limit
Comparator Offset
(VILIMX VRSNSX)
Current Limit Sink
Current
Soft-Start Source
Current
Soft-Start Sink Current
±
2
±
7.0
mV
I
CL
8.4
9.9
11.4
μA
I
ss_SC1
,
I
ss_SC2
I
ss_SK1
,
I
ss_SK2
V
ON_SS1
,
V
ON_SS2
V
SSTO
V
ON_ss1
= V
ON_ss2
= 1.5V (on)
0.5
2.4
5.0
μA
V
ON_ss1
= V
ON_ss2
= 1.5V
2
5.5
10
μA
Soft-Start On Threshold
0.7
1.12
1.4
V
Soft-Start Timeout
Threshold
UV_DELAY Source
Current
UV_DELAY Sink Current
UV_DELAY Threshold
Voltage
(Note 9)
3.4
V
I
sc_uvdelay
UV-DELAY = 2V
2
5
9
μA
I
sk_uvdelay
V
UVDelay
UV-DELAY = 0.4V
0.2
0.48
1.2
mA
2.3
V
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM5642_07 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Voltage, Dual Synchronous Buck Converter with Oscillator Synchronization
LM5642EVAL-KIT 功能描述:BOARD EVALUATION LM5642 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:PowerWise® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓撲結(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
LM5642EVAL-KIT/NOPB 功能描述:電源管理IC開發(fā)工具 LM5642 EVAL KIT RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
LM5642MH 制造商:Texas Instruments 功能描述:
LM5642MH/NOPB 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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