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MAX1992 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Quick-PWM Step-Down Controllers - Maxim Integrated

भाग संख्या MAX1992
समारोह Quick-PWM Step-Down Controllers
मैन्युफैक्चरर्स Maxim Integrated 
लोगो Maxim Integrated लोगो 
पूर्व दर्शन
1 Page
		
<?=MAX1992?> डेटा पत्रक पीडीएफ

MAX1992 pdf
Quick-PWM Step-Down Controllers with Inductor
Saturation Protection and Dynamic Output Voltages
ABSOLUTE MAXIMUM RATINGS (Note 1)
V+ to AGND............................................................-0.3V to +30V
VCC to AGND............................................................-0.3V to +6V
VDD to PGND............................................................-0.3V to +6V
PGOOD, ILIM, SKIP, SHDN to AGND ......................-0.3V to +6V
REFIN, FB, CSP to AGND.........................................-0.3V to +6V
GATE, OD to GND (MAX1993 only) .........................-0.3V to +6V
TON, OVP/UVP, LSAT to AGND .................-0.3V to (VCC + 0.3V)
REF, OUT to AGND ....................................-0.3V to (VCC + 0.3V)
FBLANK to GND (MAX1993 only) ..............-0.3V to (VCC + 0.3V)
DL to PGND................................................-0.3V to (VDD + 0.3V)
CSN to AGND............................................................-2V to +30V
DH to LX .....................................................-0.3V to (BST + 0.3V)
LX to AGND ...............................................................-2V to +30V
BST to LX..................................................................-0.3V to +6V
AGND to PGND (MAX1992 only) ..........................-0.3V to +0.3V
REF Short Circuit to AGND.........................................Continuous
Continuous Power Dissipation (TA = +70°C)
24-Pin 4mm x 4mm Thin QFN
(derated 20.8mW/°C above +70°C)...........................1667mW
Operating Temperature Range
MAX199_ETG ..................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: For the MAX1993, AGND and PGND refer to a single pin designated GND.
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
(V+ = 15V, VCC = VDD = SHDN = 5V, SKIP = GND, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
PWM CONTROLLER
Input Voltage Range
SYMBOL
CONDITIONS
VIN
VBIAS
Battery voltage, V+
VCC, VDD
MIN TYP MAX UNITS
2 28
V
4.5 5.5
Output Voltage Accuracy
(MAX1992 Fixed)
VOUT
MAX1992
V+ = 4.5V to 28V,
SKIP = VCC
(Note 2)
FB = GND
FB = VCC
2.475 2.5 2.525
1.782 1.8 1.818
V
Feedback Voltage Accuracy
(MAX1992 Adjustable)
VFB
MAX1992 V+ = 4.5V to 28V, SKIP = VCC
(Note 2)
0.693 0.7 0.707
V
Feedback Voltage Accuracy
(MAX1993)
MAX1993
REFIN = 0.35 × REF
0.693 0.7 0.707
V+ = 4.5V to 28V,
VFB SKIP = VCC
(Note 2)
REFIN = REF
1.980 2 2.020
Load Regulation Error
Line Regulation Error
FB Input Bias Current
Output Adjust Range
OUT Input Resistance
IFB
ROUT
ILOAD = 0 to 3A, SKIP = VCC
VCC = 4.5V to 5.5V, V+ = 4.5V to 28V
MAX1992
MAX1993
FB = GND
FB = VCC or adjustable
-0.1
0.7
90
70
400
0.1
0.25
+0.1
5.5
190 350
145 270
800 1400
OUT Discharge Mode
On-Resistance
RDISCHARGE
10 25
OUT Synchronous Rectifier
Discharge Mode Turn-On Level
Soft-Start Ramp Time
tSS Rising edge on SHDN to full current limit
0.2 0.3 0.4
1.7
V
%
%
µA
V
kΩ
Ω
V
ms
2 _______________________________________________________________________________________

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डाउनलोड[ MAX1992 Datasheet.PDF ]


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