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参数资料
| 型号： | LTC4160EUDC#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC20 |
| 封装： | 3 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20 |
| 文件页数： | 8/32页 |
| 文件大小： | 422K |
| 代理商： | LTC4160EUDC#TRPBF |
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LTC4160/LTC4160-1
16
41601fa
+
–
+
–
0.3V
1.18V
3.6V
CLPROG
ISWITCH/N
+ –
+–
15mV
OmV
IDEAL
DIODE
PWM AND
GATE DRIVE
AVERAGE VBUS OUTPUT
CURRENT LIMIT
CONTROLLER
VBUS
VOLTAGE
CONTROLLER
VOUT VOLTAGE
CONTROLLER
+
–
5.1V
17
IDGATE
10
VOUT
12
SW
3.5V TO
(BAT + 0.3V)
TO SYSTEM LOAD
SINGLE CELL
Li-Ion
41601 F03
14
BAT
BATTERY POWER
11
TO USB
OR WALL
ADAPTER
13
+
2
OVSENS
VBUS
1
OVGATE
+
–
6V
OVERVOLTAGE PROTECTION
×2
+
–
+ –
1V
BATTERY CHARGER
IBAT/1000
+
–
VFLOAT
+
–
PROG
8
OPERATION
current when the NMOS switch is on. This will cause the
inductor current to run away and the voltage on CLPROG
to rise. When CLPROG reaches 1.2V the switching of the
synchronous PMOS is terminated and VOUT is applied
statically to its gate. This ensures that the inductor current
will have sufficient negative slope during the time current
is flowing out of the VBUS pin. The PMOS will resume
switching when CLPROG drops down to 1.15V.
The PMOS switch is enabled when VBUS rises above
VOUT + 180mV and is disabled when it falls below
VOUT + 70mV to prevent the inductor current from run-
ning away when not in current limit. If the PMOS switch is
disabled for more than 7.2ms then the switcher will shut
off, the FAULT pin will go low and a short circuit fault will be
declared. To re-enable step-up mode, the ENOTG pin, with
IDhigh,mustbecycledlowandthenhighortheIDpin,with
ENOTG grounded, must be cycled high and then low.
Ideal Diode(s) from BAT to VOUT
The LTC4160/LTC4160-1 each have an internal ideal diode
as well as a controller for an external ideal diode. Both the
internal and the external ideal diodes are always on and
will respond quickly whenever VOUT drops below BAT.
If the load current increases beyond the power allowed
from the bidirectional switching regulator, additional
power will be pulled from the battery via the ideal diode(s).
Furthermore, if power to VBUS (USB or wall adapter) is
removed, then all of the application power will be provided
by the battery via the ideal diode(s). The ideal diode(s) will
prevent VOUT from drooping with only the storage capaci-
tancerequiredforthebidirectionalswitchingregulator.The
internal ideal diode consists of a precision amplifier that
activates a large on-chip P-channel MOSFET whenever
Figure 4. Ideal Diode V-I Characteristics
Figure 3. PowerPath Block Diagram – USB On-The-Go
FORWARD VOLTAGE (mV) (BAT – VOUT)
0
CURRENT
(mA)
600
1800
2000
2200
120
240 300
41601 F04
200
1400
1000
400
1600
0
1200
800
60
180
360
480
420
VISHAY Si2333
OPTIONAL EXTERNAL
IDEAL DIODE
LTC4160/
LTC4160-1
IDEAL DIODE
ON
SEMICONDUCTOR
MBRM120LT3
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相关代理商/技术参数 |
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| LTC4210-1CS6#PBF | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 16.5V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:IC HOT SWAP CONT 制造商:Linear Technology 功能描述:HOT SWAP CNTRL 16.5VIN 6SOT23 制造商:Linear Technology 功能描述:HOT SWAP, CNTRL, 16.5VIN, 6SOT23 制造商:Linear Technology 功能描述:IC, HOT SWAP CONT; Controller Applications:Hot Board Insertion, Electronic Circuit Breaker, Industrial High Side Switch; Input Voltage:16.5V; Internal Switch:Yes; Supply Voltage Min:2.7V; Supply Voltage Max:16.5V; No. of Pins:6 ;RoHS Compliant: Yes |
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