BD9122GUL-E2 Datasheet, PDF (3/19 Pages) Rohm – 2.5V to 5.5V, 0.3A 1ch Synchronous Buck Converter integrated FET

0J3J0AJ00110
Datasheet
●Absolute Maximum Ratings (Ta=25℃)
Parameter
VCC Voltage
PVCC Voltage
Symbol
Limits
Unit
VCC
-0.3 to +7 ^＊1
V
PVCC
-0.3 to +7 ^＊1
V
EN Voltage
VEN
-0.3 to +7
V
SW,ITH Voltage
Power Dissipation
VSW,VIT
H
-0.3 to +7
V
Pd
660^＊2
mW
Operating temperature range
Topr
-25 to +85
℃
Storage temperature range
Tstg
-55 to +150
℃
Maximum junction temperature
Tjmax
+150
℃
＊1 Pd should not be exceeded.
＊2 Derating in done 5.28mW/℃ for temperatures above Ta=25℃, Mounted on 50mm×58mm×1.6mm Glass Epoxy PCB.
●Operating Ratings (Ta=25℃)
Parameter
Symbol
VCC Voltage
PVCC Voltage
VCC ^*3
PVCC ^*3
EN Voltage
SW average output
EN
Isw ^*3
Output voltage Setting Range
VOUT
＊3 Pd should not be exceeded.
＊4 In case set output voltage 1.8V or more, VccMin = 2.7V.
Min.
2.5^*4
2.5^*4
0
-
1.0
Limits
Typ.
3.3
3.3
-
-
-
Max.
Unit
5.5
V
5.5
V
VCC
V
0.3
A
2.0
V
●Electrical Characteristics ◎(Ta=25℃, VCC=PVCC=3.3V, EN=VCC, R1=20kΩ, R2=10kΩ, unless otherwise specified.)
Parameter
Symbol
Min.
Limits
Typ.
Unit
Max.
Conditions
Standby current
ISTB
-
0
10
μA EN=GND
Bias current
ICC
-
250
400
μA
EN Low voltage
VENL
-
GND
0.8
V Standby mode
EN High voltage
VENH
2.0
VCC
-
V Active mode
EN input current
IEN
-
1
10
μA VEN=3.3V
Oscillation frequency
FOSC
0.8
1
1.2
MHz
Pch FET ON resistance
RONP
-
0.3
0.6
Ω PVCC=3.3V
Nch FET ON resistance
RONN
-
0.2
0.5
Ω PVCC=3.3V
ADJ Voltage
VADJ
0.780
0.800
0.820
V
Output voltage
VOUT
-
1.200
-
V
ITH SInk current
ITHSI
10
20
-
μA VADJ=1.0V
ITH Source Current
ITHSO
10
20
-
μA VADJ=0.6V
UVLO threshold voltage
VUVLO1
2.2
2.3
2.4
V VCC=3→0V
UVLO release voltage
VUVLO2
2.22
2.35
2.5
V VCC=0→3V
Soft start time
TSS
0.5
1
2
ms
Timer latch time
TLATCH
1
2
4
ms SCP/TSD operated
Output Short circuit Threshold Voltage
VSCP
-
VOUT×0.5
-
V
VOUT=2→0V
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TSZ02201-0J3J0AJ00110-1-2
02.MAR.2012 Rev.001