TECHNICAL NOTE
Power Management Switch IC Series for PCs and Digital Consumer Product
1ch Small Current Output
Power Management Switch ICs
BD2202G, BD2206G
●Description
The High-side switch for memory card slot is an IC High-side switch with a function of over-current protection used in the
power supply line of a memory card slot. In the switch part an N channel MOSFET low ON resistance has been 1 circuit
integrated.
The switch goes OFF when the over-current condition lasts longer than the over-current shutdown time. The OFF switch is
set on latch off mode.
The operating voltage range is 2.7V to 3.6V and the current limit value is set on 400mA, 1A.
Moreover, a soft start function, an under voltage lockout function and an over temperature protection function are integrated.
●Feature
1) Single low on-resistance (Typ. = 150mΩ) Nch MOS FET
2) Continuous load current 0.2A(BD2202G) / 0.5A(BD2206G)
3) Control input logic: Active-High
4) Soft start function
5) Over current protection circuit
6) Over temperature protection circuit
7) Under voltage lockout
8) Power supply voltage range 2.7V～3.6V
9) Operating temperature range -25℃～85℃
●Applications
Memory card slots of STB, Digital still camera, Cell Phones, Notebook PC.
●Line up
Parameter
BD2202G
BD2206G
Continuous load current (A)
0.2
0.5
Short circuit current limit (A)
0.4
1.0
Logic Control input
High
High
May 2008
●Electrical characteristics
◎BD2202G
(Unless otherwise specified, VIN = 3.3V, Ta = 25°C)
DC characteristics
Parameter
Symbol
Limits
Min.
Typ.
Max.
Unit
Condition
Operating current
IDD
-
70
90
μA
VEN = 3.3V, VOUT = OPEN
Standby current
ISTB
-
0.01
1
μA
VEN = 0V, OUT = OPEN
EN input voltage
VEN
2.0
-
-
V
High level input
-
-
0.8
V
Low level input
EN input current
IEN
-1.0
0.01
1.0
μA
VEN = 0V or VEN = 3.3V
ON resistance
RON
-
150
200
mΩ
IOUT = 50mA
ISC
200
-
600
mA
VOUT = 0V
ILEAK
-
0.01
10
μA
VEN = 0V, VOUT = 0V
VTUVH
2.1
2.3
2.5
V
VIN increasing
VTUVL
2.0
2.2
2.4
V
VIN decreasing
Short-circuit output current
Output leak current
UVLO threshold
AC characteristics
Parameter
Symbol
Limits
Min.
Typ.
Max.
Unit
Condition
Output rise time
TON1
0.25
1.2
6
ms
ROUT=500Ω, COUT=0.1μF
Output turn on time
TON2
0.4
2
10
ms
ROUT=500Ω, COUT=0.1μF
Output fall time
TOFF1
50
100
200
μs
ROUT=500Ω, COUT=0.1μF
Output turn off time
TOFF2
50
100
200
μs
ROUT=500Ω, COUT=0.1μF
5
10
15
ms
At continuous over current
3
-
15
ms
At discontinuous over current
Over current shutdown time 1
Over current shutdown time 2
TBLANK
1
TBLANK
2
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