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參數(shù)資料
| 型號： | MB3845PFV |
| 廠商： | FUJITSU LTD |
| 元件分類： | 電源管理 |
| 英文描述： | Power Management 2-ch Switch IC |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封裝： | PLASTIC, SSOP-20 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 146K |
| 代理商： | MB3845PFV |
DS04-27604-2E
FUJITSU SEMICONDUCTOR
DATA SHEET
ASSP For Power Supply Applications
Power Management 2-ch Switch IC
MB3842/MB3845
I
DESCRIPTION
The MB3842/3845 is a power management switch with built-in 2-channel low-on resistance (typ. 100m
) switch.
Output control is by means of a control signal, and the MB3842 is designed for high-active operation (output on
when EN is Hi), while the MB3845 is designed for low-active operation (output on when EN is low.)
To provide adaptability to a variety of operations, the MB3842/3845 features low input voltage (V
IN
>
2.5V)
operation and stable low-on resistance independent of input voltage. The switching current limit can be set from
100mA to 600mA by using external resistance, and when overcurrent conditions are detected the OC output goes
low to provide an external notification signal.
V
IN
is divided between the two channels, which operate independently of each other.
In addition, an off-state reverse current prevention function is provided to ensure accurate on/off switching action.
I
FEATURES
Low on resistance switch (typ. 100m
)
Low input voltage operation (2.5 V to 5.5 V)
Switch current (max. 0.6 A)
UVLO
:V
IN
threshold
ENABLE
:EN threshold
:Power supply current at output off = 0
μ
A EN
<
0.8V for MB3842, EN
=
V
IN
for MB3845
External setting for soft start time and switch current limit.
Over-temperature detection (switch latched off), over-current detection (not latched)
OC pin flag set following overcurrent detection, over-temperature detection, or UVLO detection.
Reverse current prevention at OFF (V
IN
≥
1.5 V)
Either channel may be operated alone.
2.3V/2.1 V hysteresis 200 mV
EN 1.4V/1.6 V for MB3842, EN 1/2 V
IN
for MB3845
I
PACKAGE
20-pin plastic SSOP
(FPT-20P-M03)
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| MB3845PFV-ER | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:Power Management 2-ch Switch IC |
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