參數(shù)資料
型號(hào)： LTC3226IUD#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 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)： 10/16頁(yè)
文件大?。?/td> 431K
代理商： LTC3226IUD#TRPBF
LTC3226
3
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
VIN
Input Supply Range
l
2.5
5.5
V
IVIN(ST)
VIN Quiescent Current in Normal Mode
VPFI > 1.2V, VCPO_FB > 1.2V, VIN < VCPO
10
A
ICPO(ST)
CPO Quiescent Current in Normal Mode
VPFI > 1.2V, VCPO_FB > 1.2V, VIN < VCPO
20
A
IVOUT(ST)
VOUT Quiescent Current in Normal Mode
VOUT = VIN, VPFI > 1.2V, VCPO_FB > 1.2V,
VIN < VCPO
5
A
ICPO(BU)
CPO Quiescent Current in Backup Mode
VPFI < 1.2V, VLDO_FB > 0.8V, VCPO > VOUT
24
A
IVOUT(BU)
VOUT Quiescent Current in Backup Mode
VIN = 0V, VPFI < 1.2V, VLDO_FB > 0.8V,
VCPO > VOUT
3
A
Ideal Diode Controller
VFWD(EDA)
External Ideal Diode Forward Voltage (VIN-VOUT) IVOUT = 2mA
15
mV
VRTO
Fast Turn-Off Voltage (VIN-VOUT)
VIN Falling
–45
mV
Fast Turn-On Voltage (VIN-VOUT)
VOUT Falling
45
mV
Charge Pump Supercapacitor Charger
VCPO_FB
CPO_FB Pin Threshold for Entering Sleep Mode
l
1.18
1.21
1.24
V
CPO_FB Pin Hysteresis for Exiting Sleep Mode
20
mV
ICPO_FB
Charge Pump FB Pin Input Leakage
VCPO_FB = 1.3V
l
–50
50
nA
fOSC
CLK Frequency
0.75
0.9
1.05
MHz
ROL
Effective Open-Loop Output Impedance (Note 4) VCPO = 4.5V, CFLY = 1F
6
Ω
VPROG
PROG Pin Servo Voltage
VCPO_FB < 1.2V
l
0.98
1.0
1.02
V
IVIN(ILIM)
Input Current Limit
RPROG = 33.3k, VCPO = 0V
360
mA
hPROG
Ratio of VIN Input Current Limit to PROG Pin
Current
RPROG = 33.3k, VCPO = 0V
10,500
A/A
ICHRG(1x)
CPO Pin Charging Current (1x Mode)
VIN = 3.8V, RPROG = 33.3k, VCPO = 3V
315
mA
ICHRG(2x)
CPO Pin Charging Current (2x Mode)
RPROG = 33.3k
157.5
mA
ISC
Short-Circuit Charge Current
PROG Pin Grounded, VCPO = 0V
600
mA
VMODE
VIN to CPO Voltage Differential for Switching
Mode from 1x to 2x
200
mV
1x/2x Mode Comparator Hysteresis
120
mV
VCLAMP
Maximum Voltage Across Either Supercapacitor
After Charging
l
2.65
2.75
V
VSTACK
Maximum Supercapacitor Stack Voltage
l
5.3
5.5
V
VMID
VMID Output Voltage
2.5
V
VMID Current Sourcing Capability
VMID < VCPO/2, VCPO_FB > 1.24V
4.5
mA
VMID Current Sinking Capability
VMID > VCPO/2, VCPO_FB > 1.24V
5.5
mA
CPO_FB Pin Threshold Voltage (Rising) for
CAPGOOD
l
1.09
1.11
1.13
V
CPO_FB Pin Hysteresis for CAPGOOD
20
mV
CAPGOOD Output Low Voltage
ISINK = 5mA
65
mV
CAPGOOD High Impedance Leakage Current
VCAPGOOD = 5V
l
1
A
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