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参数资料
| 型号： | LM25119PSQ |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, QCC32 |
| 封装： | 5 X 5 MM, LLP-32 |
| 文件页数： | 21/24页 |
| 文件大小： | 694K |
| 代理商： | LM25119PSQ |
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Error Amplifier
V
REF
FB Reference Voltage
Measured at FB pin, FB = COMP
0.788
0.8
0.812
V
FB Input Bias Current
FB = 0.8V
1
nA
FB Disable Threshold
Interleaved Threshold
2.5
V
COMP VOH
Isource = 3mA
2.8
V
COMP VOL
Isink = 3mA
0.31
V
A
OL
DC Gain
80
dB
f
BW
Unity Gain Bandwidth
3
MHz
PWM Comparators
t
HO(OFF)
Forced HO Off-time
220
320
430
ns
t
ON(min)
Minimum HO On-time
C
RAMP = 50pF
100
ns
Oscillator
f
SW1
Frequency 1
R
T = 25k
180
200
220
kHz
f
SW2
Frequency 2
R
T = 10k
430
480
530
kHz
RT Output Voltage
1.25
V
RT Sync Positive Threshold
2.5
3.2
4
V
Sync Pulse Minimum Width
100
ns
Current Limit
V
CS(TH)
Cycle-by-cycle Sense Voltage
Threshold (CS - CSG)
RAMP = 0
106
120
134
mV
CS Bias Current
CS = 0V
-70
-95
A
Hiccup Mode Fault Timer
256
Cycles
RES
I
RES
RES current Source
9.7
A
V
RES
RES threshold
C
RES Charging
1.20
1.25
1.30
V
Diode Emulation
V
IL
DEMB Input Low Threshold
2.0
1.65
V
IH
DEMB Input High Threshold
2.9
2.6
V
DEMB Input Pull-Down Resistance
50
k
SW Zero Cross Threshold
-5
mV
LO Gate Driver
V
OLL
LO Low-state Output Voltage
I
LO = 100mA
0.1
0.18
V
OHL
LO High-state Output Voltage
I
LO = -100mA, VOHL = VCC - VLO
0.17
0.26
V
LO Rise Time
C-load = 1000pF
6
ns
LO Fall Time
C-load = 1000pF
5
ns
I
OHL
Peak LO Source Current
V
LO = 0V
2.5
A
I
OLL
Peak LO Sink Current
V
LO = VCC
3.3
A
HO Gate Driver
V
OLH
HO Low-state Output Voltage
I
HO = 100mA
0.11
0.19
V
OHH
HO High-state Output Voltage
I
HO = -100mA, VOHH = VHB - VHO
0.18
0.27
V
HO Rise Time
C-load = 1000pF
6
ns
HO Fall Time
C-load = 1000pF
5
ns
I
OHH
Peak HO Source Current
V
HO = 0V, SW = 0, HB = 8V
2.2
A
I
OLH
Peak HO Sink Current
V
HO = VHB = 8V
3.3
A
HB to SW Under-voltage
3
V
HB DC Bias Current
HB - SW = 8V
70
100
A
SWITCHING CHARACTERISTICS
LO Fall to HO Rise Delay
No load
70
ns
HO Fall to LO Rise Delay
No load
60
ns
www.national.com
6
LM25119
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM25119PSQ/NOPB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM25119PSQE | 制造商:Texas Instruments 功能描述:IC, BUCK, CNTRL, DUAL, SYNC, 32LLP 制造商:Texas Instruments 功能描述:IC, BUCK, CNTRL, DUAL, SYNC, 32LLP; Primary Input Voltage:42V; No. of Outputs:2; Output Current:20A; Voltage Regulator Case Style:LLP; No. of Pins:32; Operating Temperature Min:-40C; Operating Temperature Max:125C; SVHC:No SVHC ;RoHS Compliant: Yes |
| LM25119PSQE/NOPB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM25119PSQX/NOPB | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| LM25119QPSQ/NOPB | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:IC REG CTRLR BUCK PWM CM 32-LLP 制造商:Texas Instruments 功能描述:LM25119QPSQ/NOPB |
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