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PDF MB3807A Data sheet ( Hoja de datos )
| Número de pieza | MB3807A | |
| Descripción | Power Management Switching IC | |
| Fabricantes | Fujitsu Media Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MB3807A (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27602-1E
ASSP Power Supply
BIPOLAR
Power Management Switching IC
(with flash memory power switching function)
MB3807A
s DESCRIPTION
When data is written to or read from flash memory, it requires that the voltage at its power supply (VPP) be switched
(to 12 V for writing and to 3.3 or 5.0 V for reading).
The MB3807A is a power management switching IC, designed to be compatible with the PCMCIA digital controller,
to switch the VPP voltage of flash memory.
When the switch is turned on, optimum voltage is applied to the gate of the internal charge pump N-ch MOS
switch, providing a constant amount of ON resistance. The ON resistance is also kept to be low to reduce voltage
drop at the VPP pin that is caused by large current flowing when data is written.
In addition, the OFF time is much shorter than the ON time to prevent short-circuiting between the reading and
writing power supplies when the device switches the VPP voltage for reading or writing data (break-before-make
operation).
s FEATURES
• Switching at low ON resistance
For writing data: SWIN1 = 12 V, Ron = 0.3 Ω
For reading data: SWIN2 = 5 V, Ron = 6.0 Ω
SWIN2 = 3.3 V, Ron = 8.5 Ω
• Wide range of supply voltages: VCC = 2.7 to 5.5 V
• Prevention of reverse current from the load at switch-off time
• ON time controllable with external pin
• Break-before-make operation
s PACKAGE
16 pin Plastic SOP
(FPT-16P-M04)
1 page  
MB3807A
s ABSOLUTE MAXIMUM RATINGS (See WARNING)
Parameter
Input voltage
Switching voltage
Switching current
Permissible loss
Storage temperature
Symbol
Conditions
VIN
VSWIN1
VSWIN2
ISWIN1
ISWIN2
PD
Tstg
—
—
—
Switch-on peak
Ta ≤ +75°C
—
Ratings
Min.
Max.
–0.3 7
–0.3 18
–0.3 18
— 1.5
— 0.3
— 290
–55 +125
Unit
V
V
V
A
A
mW
°C
WARNING: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Func-
tional operation should be restricted to the conditions as detailed in the operational sections of this
data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
s RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage
High-level input voltage
Low-level input voltage
Switching voltage
Switching current
DLY pin capacitance for
connection
DLY pin leakage current
Operating temperature
Symbol
Conditions
VCC
VIH
VIL
VSWIN1
VSWIN2
ISWIN1
ISWIN2
CDLY
IDLY
Top
—
—
—
—
Switch OFF state
—
Switch OFF state
Switch ON state
Switch ON state
—
—
—
Values
Min.
Max.
2.7 5.5
VCC × 0.8
VCC
0 VCC × 0.2
VCC 15.0
0 15.0
VCC 6.0
0 6.0
— 500
— 100
— 10
–0.1 0.1
–40 +75
Unit
V
V
V
V
V
V
V
mA
mA
nF
µA
°C
5
5 Page 
MB3807A
s TYPICAL CHARACTERISTIC CURVES
ON resistance (SW1)
400
VCC = 3.0 V
VCC = 5.0 V
ISW = 500 mA
350
300
250
200
9
10 11 12 13 14
Switching voitage (SWIN1) (V)
15
ON resistance (temperature dependence characteristic: SWIN1)
450
VCC = 3.0 V
400
VCC = 5.0 V
VSWIN1 = 12 V
350
Ta = +75°C
300
Ta = +25°C
250 Ta = –25°C
200
Ta = –40°C
150
110 200 300 400 500
Isw (mA)
ON resistance (temperature dependence characteristic: SWIN2 )
11.5
11.0
10.5
VCC = 3.0 V
VCC = 5.0 V
VSWIN2 = 3 V
Ta = +75°C
10.0
9.5
9.0 Ta = +25°C
8.5
8.0
7.5
20
40 60
Isw (mA)
Ta = –25°C
Ta = –40°C
80 100
ON resistance (SW2)
10
VCC = 3.0 V
VCC = 5.0 V
9 ISW = 100 mA
8
7
6
5
4
345
Switching voitage (SWIN2) (V)
6
ON resistance (temperature dependence characteristic: SWIN2)
7.5
VCC = 3.0 V
7.0 VCC = 5.0 V
VSWIN2 = 12 V
6.5
Ta = +75°C
6.0
Ta = +25°C
5.5
5.0 Ta = –25°C
4.5
Ta = –40°C
4.0
20 40 60 80
Isw (mA)
Charge pump output voltage
34
VCC = 5.0 V
32
100
30
28
26
24
22
20
18
9
10 11 12 13 14
Switching voltage (SWIN1)(V)
15
(Continued)
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet MB3807A.PDF ] | |
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