參數(shù)資料
型號： LTC4090EDJC#TRPBR
廠商： LINEAR TECHNOLOGY CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO22
封裝： 6 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-229WXXX, DFN-22
文件頁數(shù)： 22/28頁
文件大?。?/td> 392K
代理商： LTC4090EDJC#TRPBR
LTC4090
3
4090f
ELECTRICAL CHARACTERISTICS The ● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. HVIN = HVEN = 12V, BOOST = 17V, VIN = HPWR = 5V, VBAT = 3.7V,
RPROG = 100k, RCLPROG = 2k and SUSP = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCLEN
Input Current Limit Enable Threshold
Voltage (VIN - VOUT)
(VIN - VOUT) Rising
(VIN - VOUT) Falling
20
–80
50
–50
80
–20
mV
VUVLO
Input Undervoltage Lockout
VIN Rising
●
3.6
3.8
4
V
ΔVUVLO
Input Undervoltage Lockout Hysteresis
VIN Rising – VIN Falling
130
mV
High Voltage Regulator
VHVIN
HVIN Supply Voltage
●
660
V
VOVLO
HVIN Overvoltage Lockout Threshold
●
38
41.5
45
V
IHVIN
HVIN Bias Current
Shutdown; HVEN = 0.2V
Not Switching, HVOUT = 3.6V
●
0.01
130
0.5
200
μA
VOUT
Output Voltage with HVIN Present
Assumes HVOUT to OUT
Connection
3.45
VBAT + 0.3
4.6
V
fSW
Switching Frequency
RT = 8.66k
RT = 29.4k
RT = 187k
2.1
0.9
160
2.4
1.0
200
2.7
1.15
240
MHz
kHz
tOFF
Minimum Switch Off-Time
●
60
150
ns
ISW(MAX)
Switch Current Limit
Duty Cycle = 5%
3.0
3.5
4.0
A
VSAT
Switch VCESAT
ISW = 2A
500
mV
IR
Boost Schottky Reverse Leakage
SW = 10V, HVOUT = 0V
0.02
2
μA
VB(MIN)
Minimum Boost Voltage (Note 8)
●
1.5
2.1
V
IBST
BOOST Pin Current
ISW = 1A
22
35
mA
Battery Management
IBAT
Battery Drain Current
VBAT = 4.3V, Charging Stopped
Suspend Mode; SUSP = 5V
VIN = 0V, BAT Powers OUT, No Load
●
15
22
60
27
35
100
μA
VFLOAT
VBAT Regulated Output Voltage
IBAT = 2mA
IBAT = 2mA; 0 ≤ TA ≤ 85°C
4.165
4.158
4.200
4.235
4.242
V
ICHG
Constant-Current Mode Charge Current,
No Load
RPROG = 100k
RPROG = 50k, 0 ≤ TA ≤ 85°C
●
465
900
500
1000
535
1080
mA
ICHG(MAX)
Maximum Charge Current
1.5
A
VPROG
PROG Pin Servo Voltage
RPROG = 100k
RPROG = 50k
●
0.98
1.00
1.02
V
kEOC
Ratio of End-of-Charge Indication
Current to Charge Current
VBAT = VFLOAT (4.2V)
●
0.085
0.1
0.11
mA/mA
ITRKL
Trickle Charge Current
BAT = 2V
35
50
60
mA
VTRKL
Trickle Charge Threshold Voltage
BAT Rising
●
2.75
2.9
3.0
V
VCEN
Charge Enable Threshold Voltage
(VOUT – VBAT) Falling; VBAT = 4V
(VOUT – VBAT) Rising; VBAT = 4V
55
80
mV
ΔVRECHRG
Recharge Battery Threshold Voltage
Threshold Voltage Relative to VFLOAT ●
–65
–100
–135
mV
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