BD2204GUL ROHM [Rohm], BD2204GUL Datasheet - Page 4

• Manufacturer Part Number: BD2204GUL
• Description: Power Supply Selector Switch IC for SD Cards
• Manufacturer: ROHM [Rohm]

●Measurement Circuit
www.rohm.com
TSZ22111・15・001
© 2012 ROHM Co., Ltd. All rights reserved.
BD2204GUL
A
VEN
*3
Dropped voltage of VOUT is specified as Voutdrop1 and Voutdrop2.
That voltage drop is caused by the function which prevents VIN1 and VIN2 from turning on simultaneously.
This function generates the period which both VIN1and VIN2 are turned off, and prevents the penetration
current between VIN1 and VIN2.
VIN2
VEN
When the switch changes from VIN1 to VIN2 or from VIN2 to VIN1, it is possible that VOUT voltage drops.
VIN2
Operating current, Standby current
On-resistance, VOUT drop voltage
A
VIN1
VIN1
*T
*The value of Min. is in condition of I
*T
COMP
D1
(Internal Signal)
(Internal Signal)
CIN
VOUT
and T
VOUT=VIN2→VIN1
OUT1
OUT2
is period of VOUT becoming same voltage as VIN2.
VIN1
VIN2
VIN1
VIN2
EN
EN
D2
VIN2(1.8V)
Voutdrop2
+ T
VOUT
VOUT
COMP
GND
GND
SEL
SEL
are period of Simultaneous-Off.
Figure 5. Measurement circuit
Figure 4. Vout drop voltage
T
D 1
Min. 1.4V
VIN(3.3V)
OUT
CL
VSEL
=500mA and C
4/21
↓
VEN
VEN
VIN2
VIN2
EN, SEL input voltage, Output rise, fall time
VIN(3.3V)
Min. 1.4V
T
L
C OMP
=15uF.
VIN1
VIN1
Discharge resistance
CIN
CIN
VOUT=VIN1→VIN2
VIN1
VIN2
VIN1
VIN2
EN
EN
T
D 2
TSZ02201-0E3E0H300030-1-2
Voutdrop1
VIN2(1.8V)
VOUT
VOUT
GND
GND
SEL
SEL
07.Aug.2012 Rev.001
Datasheet
Datasheet
↑
RL
VSEL
1mA
CL