參數(shù)資料
型號(hào)： FAN5026MTCX
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： Dual DDR/Dual-output PWM Controller
中文描述： DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 4.40 MM, MO-153AB, TSSOP-28
文件頁(yè)數(shù)： 4/17頁(yè)
文件大小： 192K
代理商： FAN5026MTCX
PRODUCT SPECIFICATION
FAN5026
4
REV. 1.0.2b 9/2/03
Absolute Maximum Ratings
Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life
impaired. Functional operation under these conditions is not implied.
Recommended Operating Conditions
14
VIN
Input Voltage
amplitude of the internal oscillator ramp. When using the IC for 2-step conversion from
5V input, connect through 100K to ground, which will set the appropriate ramp gain and
synchronize the channels 90° out of phase.
Power Good Flag
. An open-drain output that will pull LOW when VSEN is outside of a
±10% range of the 0.9V reference.
Power Good 2
. When not in DDR Mode: Open-drain output that pulls LOW when the
VOUT is out of regulation or in a fault condition
Reference Out 2
. When in DDR Mode, provides a buffered output of REF2. Typically
used as the VDDQ/2 reference.
Current Limit 2
. When not in DDR Mode, A resistor from this pin to GND sets the
current limit.
Reference
for reg #2 when in DDR Mode. Typically set to VOUT1/2.
VCC
. This pin powers the chip as well as the LDRV buffers. The IC starts to operate
when voltage on this pin exceeds 4.6V (UVLO rising) and shuts down when it drops
below 4.3V (UVLO falling).
. Normally connected to battery, providing voltage feed-forward to set the
15
PG1
16
PG2 /
REF2OUT
18
ILIM2 /
REF2
28
VCC
Parameter
VCC Supply Voltage
VIN
BOOT, SW, ISNS, HDRV
BOOT to SW
All Other Pins
Junction Temperature (T
Storage Temperature
Lead Soldering Temperature, 10 seconds
Min.
Typ.
Max.
6.5
18
24
6.5
VCC+0.3
150
150
300
Units
V
V
V
V
V
°C
°C
°C
–0.3
–40
–65
J
)
Parameter
Supply Voltage VCC
Supply Voltage VIN
Ambient Temperature (T
Conditions
Min.
4.75
Typ.
5
Max.
5.25
16
85
Units
V
V
°C
A
)
note 1
–40
Pin Definitions
(Continued)
Pin
Number
Pin Name
Pin Function Description
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