參數(shù)資料
型號(hào): LTC3226IUD#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: SWITCHED CAPACITOR REGULATOR, PQCC16
封裝: 3 X 3 MM, LEAD FREE, PLASTIC, MO-220WEED-2, QFN-16
文件頁(yè)數(shù): 11/16頁(yè)
文件大?。?/td> 431K
代理商: LTC3226IUD#TRPBF
LTC3226
4
3226f
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C (Note 3). VIN = 3.3V, VCPO = 5V, VOUT = 3.3V, VMID = 1/2 VCPO unless
otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LDO
Minimum CPO Voltage for LDO Operation
2.4
V
VLDO_FB
LDO FB Servo Voltage
IVOUT = 1mA
l
0.76
0.8
0.82
V
Load Regulation ΔVLDO_FB/ΔIOUT
1mA < IVOUT < 2A
2.7
mV/A
LDO FET RDS(ON)
VCPO = 3.6V
200
ILDO_FB(LEAK) LDO_FB Input Leakage Current
VLDO_FB = 0.9V
l
–60
60
nA
ILIM
LDO Current Limit
2
4
A
RST_FB, RST
VRST_FB(TH)
RST_FB Threshold (Falling Edge)
l
0.72
0.74
0.76
V
VRST_FB(HYS) RST_FB Hysteresis
20
mV
IRST_FB(LEAK) RST_FB Input Leakage Current
VRST_FB = 0.9V
l
–50
50
nA
RST Output Low Voltage
ISINK = 5mA
65
mV
RST High Impedance Leakage Current
VRST = 5V
l
1
A
RST Delay (RST_FB Rising)
290
ms
Power-Fail Comparator
VPFI(TH)
PFI Input Threshold (Falling Edge)
l
1.175
1.2
1.225
V
VPFI(HYS)
PFI input Hysteresis
20
mV
IPFI(LEAK)
PFI Input Leakage Current
VPFI = 0.5V
l
–50
50
nA
PFO Output Low Voltage
ISINK = 5mA
65
mV
IPFO(LEAK)
PFO High Impedance Leakage Current
VPFO = 5V
l
1
A
PFI Delay to PFO (PFI Falling)
0.5
s
EN_CHG
VIH
Input High Voltage
l
1.3
V
VIL
Input Low Voltage
l
0.4
V
IIH
Input High Current
l
–1
1
A
IIL
Input Low Current
l
–1
1
A
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Failure to solder the exposed backside of the package to the PC
board ground plane will result in a thermal resistance much greater than
58.7°C/W.
Note 3: The LTC3226E is guaranteed to meet specifications from
0°C to 85°C junction temperature. Specifications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3226I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The junction temperature, TJ, is calculated from the
ambient temperature, TA, and power dissipation, PD, according to the
formula:
TJ = TA + (PD 58.7°C/W)
Note that the maximum ambient temperature, consistent with these
specifications, is determined by specific operating conditions in
conjunction with board layout, the rated thermal package thermal
resistance and the environmental factor.
Note 4: Output not in regulation; ROL = (2 VIN – VCPO)/ICPO.
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