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MAX8901B डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Highest Efficiency Supply - Maxim Integrated Products

भाग संख्या MAX8901B
समारोह Highest Efficiency Supply
मैन्युफैक्चरर्स Maxim Integrated Products 
लोगो Maxim Integrated Products लोगो 
पूर्व दर्शन
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<?=MAX8901B?> डेटा पत्रक पीडीएफ

MAX8901B pdf
MAX8901A/MAX8901B
Highest Efficiency Supply
for 2 to 6 Series WLEDs in a
2mm x 2mm TDFN Package
Absolute Maximum Ratings
IN to GND .................................................................-0.3V to +7V
CS, COMP, ON to GND ...............................-0.3V to (VIN + 0.3V)
OVP, LX to GND .....................................................-0.3V to +28V
PGND to GND .......................................................-0.3V to +0.3V
LX Current ..................................................................770mARMS
Continuous Power Dissipation (multilayer board at +70°C)
8-pin, 2mm x 2mm TDFN
(derate above +70°C by 11.9mW/°C) ..........................953mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
(VIN = VON = VOVP = 3.6V, VPGND = VGND = 0V, COMP, CS, and LX are unconnected, TA = -40°C to +85°C, unless otherwise noted.
Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Input Voltage
VIN
2.6 5.5 V
Input Undervoltage Lockout
Threshold
Input Overvoltage Lockout
Threshold
Shutdown Input Current
Quiescent Current
Output Voltage Range
OVP Overvoltage Protection
Threshold
OVP Input Current
CS Regulation Voltage
ON Shutdown Delay
ON High Voltage
ON Low Voltage
ON Input Current
Initial ON High Pulse Width
ON High Pulse Width
ON Low Pulse Width
VIN_UVLO
VIN_OVLO
ISHDN
IQ
VOUT
VIN rising
VIN falling
VIN rising
VIN falling
VON = 0V
VCS = 0.55V, no load
(not switching)
TA = +25°C
TA = +85°C
MAX8901A
MAX8901B
VDIODE = external boost diode voltage drop
2.25
6.2
6.0
VIN -
VDIODE
0.01
0.1
70
115
VOV 6 LEDs with 25V OVP option
24 25
IOV
VCS
tSHDN
VON_HI
VON_LO
ION
tHI_INIT
tHI
tLO
VOVP = 20V
No dimming
Time VON is below low threshold until
shutdown (Figure 1)
2.6V < VIN < 5.5V
2.6V < VIN < 5.5V
ON = IN
TA = +25°C
TA = +85°C
First ON high pulse to enable IC
(MAX8901B) (Figure 1)
MAX8901B (Figure 1)
MAX8901B (Figure 1)
0.475
1.18
1.3
20
0.50
1.33
0.01
0.1
40
0.5
0.5
2.55
2.53
6.35
6.3
1
135
185
VOV
26
0.525
1.50
0.4
1
500.0
V
V
µA
µA
V
V
µA
V
ms
V
V
µA
µs
µs
µs
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MAX8901AHighest Efficiency SupplyMaxim Integrated Products
Maxim Integrated Products
MAX8901BHighest Efficiency SupplyMaxim Integrated Products
Maxim Integrated Products


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