LT1432CS8 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT1432CS8 Datasheet PDF : 28 Pages
| |||
LT1432
ABSOLUTE AXI U RATI GS
VVI+NPPinin.........................................................................................................................................
30V
40V
VC ........................................................................... 35V
VLIM and VOUT Pins ................................................... 7V
Diode Pin Voltage ................................................... 30V
Mode Pin Current (Note 2) ..................................... 1mA
Operating Temperature Range .................... 0°C to 70°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................ 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
VLIM 1
VOUT 2
VIN 3
V+ 4
8 MODE
7 GND
6 VC
5 DIODE
N8 PACKAGE
8-LEAD PLASTIC DIP
S8 PACKAGE
8-LEAD PLASTIC SO
ORDER PART
NUMBER
LT1432CN8
LT1432CS8
ELECTRICAL CHARACTERISTICS
VC = 6V, VIN = 12V, V+ = 10V, VDIODE = Open, VLIM = VOUT, VMODE = 0V, TJ = 25°C
Device is in standard test loop unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Regulated Output Voltage
VC Current = 220µA
q
4.9
5.0
5.1
V
Output Voltage Line Regulation
Input Supply Current (Note 1)
VIN = 6V to 30V
q
VIN = 6V to 30V, V+ = VIN + 5V, VC = VIN + 1V q
5
20
mV
0.3
0.5
mA
Quiescent Output Load Current
0.9
1.2
mA
Mode Pin Current
VMODE = 0V (current is out of pin)
q
VMODE = 5V (shutdown)
q
30
50
µA
15
30
µA
Mode Pin Threshold Voltage
(Normal to Burst)
IMODE = 10µA (out of pin)
q
0.6
0.9
1.5
V
VC Pin Saturation Voltage
VC Pin Maximum Sink Current
VC Pin Source Current
Current Limit Sense Voltage (Note 3)
VOUT = 5.5V (forced)
VOUT = 5.5V (forced)
VOUT = 4.5V (forced)
Device in Current Limit Loop
q
0.25 0.45
V
q
0.45 0.8
1.5
mA
q
40
60
100
µA
56
60
64
mV
VLIM Pin Current
Supply Current in Shutdown
Burst Mode Output Ripple
Burst Mode Average Output Voltage
Device in Current Limit Loop
(current is out of pin)
VMODE > 3V, VIN < 30V, VC and V+ = 0V
Device in Burst Test Circuit
Device in Burst Test Circuit
q
30
45
70
q
15
60
100
q
4.8
5
5.2
µA
µA
mVp-p
V
Clamp Diode Forward Voltage
IF = 1mA, All Other Pins Open
q
0.5 0.65
V
Startup Drive Current
VOUT
VIN =
= 2.5V (forced),
6V to 26V, V+ =
V+ = 5V to 25V,
VIN – 1V, VC = VIN
–
1.5V
q
30
45
mA
Restart Time Delay
(Note 4)
1
1.8
10
ms
Transconductance, Output to VC Pin
IC = 150µA to 250µA
q
1500 2000 2800
µmho
The q denotes specifications which apply over the operating temperature
range.
Note 1: Does not include current drawn by the LT1070 IC. See operating
parameters in standard circuit.
Note 2: Breakdown voltage on the mode pin is 7V. External current must
be limited to value shown.
Note 3: Current limit sense voltage temperature coefficient is +0.33%/°C
to match TC of copper trace material.
Note 4: VOUT pin switched from 5.5Vto 4.5V.
2
Share Link: 