|
|
PDF MB3842 Data sheet ( Hoja de datos )
| Número de pieza | MB3842 | |
| Descripción | Power Management 2-ch Switch IC | |
| Fabricantes | Fujitsu Media Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MB3842 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27604-2E
ASSP For Power Supply Applications
Power Management 2-ch Switch IC
MB3842/MB3845
s DESCRIPTION
The MB3842/3845 is a power management switch with built-in 2-channel low-on resistance (typ. 100mΩ) 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 (VIN > 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.
VIN 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.
s FEATURES
• Low on resistance switch (typ. 100mΩ)
• Low input voltage operation (2.5 V to 5.5 V)
• Switch current (max. 0.6 A)
• UVLO
:VIN threshold
2.3V/2.1 V hysteresis 200 mV
• ENABLE :EN threshold
EN 1.4V/1.6 V for MB3842, EN 1/2 VIN for MB3845
:Power supply current at output off = 0µA EN < 0.8V for MB3842, EN = VIN 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 (VIN ≥ 1.5 V)
• Either channel may be operated alone.
s PACKAGE
20-pin plastic SSOP
(FPT-20P-M03)
1 page  
MB3842/MB3845
s ABSOLUTE MAXIMUM RATINGS
Parameter
Input voltage
ENABLE voltage
Switch current
Power dissipation
Storage temperature
Symbol
Condition
VIN
VEN
ISW
PD
TSTG
Ta = +85°C
—
—
—
—
Rating
Max.
Min.
–0.3
7.0
–0.3
7.0
— 1.8
— 216
–55 +125
Unit
V
V
A
mW
°C
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current,
temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.
s RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Condition
Min.
Value
Typ.
Max.
Input voltage
ENABLE voltage
VIN
VEN
VEN ≤ VIN
—
2.5 5.0 5.5
0 — 5.5
Switch current
ISW VIN = 2.5 V to 5.5 V
— — 0.6
SS pin capacitance
CSS*
—
— — 10
OC sink current
IOCS VIN = 5.0 V, VOC = 0.4 V
2.0 5.0 —
Current limit
resistance
RLIM*
VIN = 5.0 V (ISW = 0.6 A)
VIN = 5.0 V (ISW = 0.1 A)
1.4 2.0 2.6
3.6 6.2 9.1
Operating
temperature
TOP
— –20 — +85
* : For CSS, RLIM settings, see “TYPICAL CHARACTERISTICS” and “FUNCTIONAL DESCRIPTION”.
Unit
V
V
A
nF
mA
kΩ
kΩ
°C
WARNING: The recommended operating conditions are required in order to ensure the normal operation of the
semiconductor device. All of the device's electrical characteristics are warranted when the device is
operated within these ranges.
Always use semiconductor devices within their recommended operating condition ranges. Operation
outside these ranges may adversely affect reliability and could result in device failure.
No warranty is made with respect to uses, operating conditions, or combinations not represented on
the data sheet. Users considering application outside the listed conditions are advised to contact their
FUJITSU representatives beforehand.
5
5 Page 
MB3842/MB3845
(Continued)
• Output power (ISW) saturation characteristics
Measurement circuit
5V
VIN
VIL/VIH
“Open”
EN, EN OC
SS
ISW
CS OUT
A
RLIM
GND
2Ω
VSW
100 kΩ
5V
These are the output saturation current characteristics in
overcurrent state.(when not controlled by the OC pin warning flag)
1600
1400
1200
RLIM not limited (CS GND)
1000
800
RLIM set to 2.0kΩ, 0.6A
600
Temperature protection
range
400
RLIM set to 6.2kΩ, 0.1A
200
Overcurrent flag set
(when set for 0.6A)
Unlimited
6.2 k (0.1 A)
2 k (0.6 A)
Overcurrent flag set
(when set for 0.1A)
0
0123456
VSW (V)
(Continued)
11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MB3842.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MB3841 | Power Management Switch IC | Fujitsu Media Devices |
| MB3842 | Power Management 2-ch Switch IC | Fujitsu Media Devices |
| MB3843 | Lithium Ion Battery Charger DC/DC Converter IC | Fujitsu Media Devices |
| MB3845 | Power Management 2-ch Switch IC | Fujitsu Media Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |