参数资料
型号: LT3759EMSE#PBF
厂商: Linear Technology
文件页数: 3/32页
文件大小: 0K
描述: IC REG CTRLR BST INV PWM 12-MSOP
产品培训模块: LT3759 DC to DC Controller
标准包装: 37
PWM 型: 电流模式
输出数: 1
频率 - 最大: 1MHz
电源电压: 1.6 V ~ 42 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 12-TSSOP (0.118",3.00mm 宽)裸露焊盘
包装: 管件
LT3759
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C, V IN = 12V, EN/UVLO = 12V, INTV CC = 4.75V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IN Operating Voltage
V IN Shutdown I Q
V IN Operating I Q
DRIVE Shutdown Quiescent Current
DRIVE Quiescent Current (Not Switching)
EN/UVLO < 0.4V
EN/UVLO = 1.15V
EN/UVLO < 0.4V
EN/UVLO = 1.15V
R T = 27.4k Ω, DRIVE = 6V
l
1.6
0.1
350
0.1
0.1
2.0
42
1
6
450
1
2
2.5
V
μA
μA
μA
μA
μA
mA
SENSE Current Limit Threshold
SENSE Input Bias Current
Current Out of Pin
l
46
50
–55
54
mV
μA
Error Amplifier
FBX Regulation Voltage (V FBX(REG) )
FBX Pin Input Current
FBX > 0V
FBX < 0V
FBX = 1.6V
FBX = –0.8V
l
l
1.580
–0.815
–10
1.6
–0.80
60
1.620
–0.785
120
10
V
V
nA
nA
Transconductance g m (ΔI 2 /ΔV FBX )
VC Output Impedance
FBX = V FBX(REG)
240
5
μs
FBX Line Regulation [ΔV FBX(REG) /(ΔV IN ? V FBX(REG) )]
VC Current Mode Gain (ΔV VC /ΔV SENSE )
VC Source Current
VC Sink Current
1.6V < V IN < 42V, FBX >0
1.6V < V IN < 42V, FBX <0
FBX = 0V, VC = 1.3V
FBX = 1.7V, VC = 1.3V
FBX = –0.85V, VC = 1.3V
0.02
0.02
5
–13
13
10
0.05
0.05
%/V
%/V
V/V
μA
μA
μA
Oscillator
Switching Frequency
R T Voltage
R T = 27.4k to GND, V FBX = 1.6V
R T = 86.6k to GND, V FBX = 1.6V
R T = 6.81k to GND, V FBX = 1.6V
FBX = 1.6V, –0.8V
270
300
100
1000
1.2
330
kHz
kHz
kHz
V
GATE Minimum Off-Time
GATE Minimum On-Time
SYNC Input Low
l
170
170
200
200
0.4
ns
ns
V
SYNC Input High
l
1.5
V
SS Pull-Up Current
SS = 0V, Current Out of Pin
l
–14
–10.5
–7
μA
Low Dropout Regulators (DRIVE LDO and V IN LDO)
DRIVE LDO Regulation Voltage
V IN LDO Regulation Voltage
DRIVE = 6V
DRIVE = 0V
l
l
4.6
3.6
4.75
3.75
4.9
3.9
V
V
DRIVE LDO Current Limit
V IN LDO Current Limit
INTV CC = 4V
DRIVE = 0V, INTV CC = 3V
60
60
mA
mA
DRIVE LDO Load Regulation (ΔV INTVCC /V INTVCC )
V IN LDO Load Regulation (ΔV INTVCC /V INTVCC )
0 < I INTVCC < 20mA, DRIVE = 6V
DRIVE = 0V, 0 < I INTVCC < 20mA
–1
–1
–0.6
–0.6
%
%
DRIVE LDO Line Regulation [ΔV INTVCC /(V INTVCC ? ΔV IN )]
V IN LDO Line Regulation [ΔV INTVCC /(V INTVCC ? ΔV IN )]
1.6V < V IN < 42V, DRIVE = 6V
DRIVE = 0V, 5V < V IN < 42V
0.03
0.03
0.07
0.07
%/V
%/V
DRIVE LDO Dropout Voltage (V DRIVE – V INTVcc )
DRIVE = 4V, I INTVCC = 20mA
l
190
400
mV
3759fc
For more information www.linear.com/3759
3
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