BD95500MUV Datasheet, PDF (3/21 Pages) Rohm – Switching Regulator with MOSFET for DDR-SDRAM Cores

BD95500MUV
Technical Note
●Electrical characteristics
(Unless otherwise noted, Ta=25℃, VCC=5V, VDD=5V, EN / MODE=5V, VIN=12V, REF=1.8V, RFS=68kΩ）
Parameter
Symbol
Min.
Limit
Typ.
Max.
Unit Condition
[Whole Device]
VCC Bias Current
Icc
-
1200
2000
μA
VIN Bias Current
Iin
-
100
200
μA
VCC Standby Current
Iccstb
-
0
10
μA EN＝0V
VIN Standby Current
Iinstb
-
0
10
μA EN＝0V
EN Low Voltage
Enlow
GND
-
0.8
V
EN High Voltage
Enhigh
2.3
-
5.5
V
EN Bias Current
Ien
-
7
10
μA
VREG Voltage
Vreg
2.475
2.500
2.525
V
Ireg=0 to 500uA,
Ta=-10℃ to 100℃*
[Under Voltage Locked Out ]
VCC Threshold Voltage
Vcc_UVLO
4.1
4.3
4.5
V VCC:Sweep up
VCC Hysteresis Voltage
dVcc_UVLO
100
160
220
mV VCC:Sweep down
VIN Threshold Voltage
Vin_UVLO
2.4
2.6
2.8
V VIN:Sweep up
VIN Hysteresis
dVin_UVLO
100
160
220
mV VIN:Sweep down
VREG Threshold Voltage
Vreg_UVLO
2.0
2.2
2.4
V VREG:Sweep up
VREG Hysteresis Voltage
dVreg_UVLO
100
160
220
mV VREG:Sweep down
[H³REG^TM Control Block]
ON Time
Ton
400
500
600
nsec
MAX ON Time
Tonmax
-
3
6.0
μsec
MIN OFF Time
Toffmin
-
450
550
nsec
[FET Block]
High Side ON Resistance
HGhon
-
50
80
mΩ
Low Side ON Resistance
HGlon
-
50
80
mΩ
[SCP Block]
SCP Start up Voltage
Vscp
REF×0.60 REF×0.70 REF×0.80 V
Delay Time
Tscp
-
1.0
2.0
ms
[OVP Block]
OVP Detect Voltage
Vovp
REF×1.16 REF×1.2 REF×1.24 V
[Soft Start Block]
Charge Current
Iss
2
4
6
μA
Discharge Current
Idis
0.5
1.0
2.0
μA
Standby Voltage
Vss_stb
-
-
50
mV
[Over Current Protection Block]
Current Limit Threshold 1
Current Limit Threshold2
Ilim1
Ilim2
40
50
60
mV
ILIM=0.5V ,
Ta=-10℃ to 100℃
160
200
240
mV ILIM=2.0V
[Vout Setting]
VOUT Offset Voltage 1
Voutoff1
REF-10m
REF
REF+10m V Ta=-10℃ to 100℃
VOUT Bias Current
Ivout
-100
0
100
nA
REF Bias Current
Iref
-100
0
100
nA
Is+ Input Current
IIs+
-1
0
1
μA Is+=1.8V
Is- Input Current
IIs-
-1
0
1
μA Is-=1.8V
[MODE Block]
SLLM Threshold
VthSLLM
VCC-0.5
-
VCC
V
Forced Continuous Mode
VthCONT
GND
-
0.5
V
Input Impedance
RMODE
-
400
-
kΩ
[Power Good Block]
VOUT Power Good Low Voltage
VoutPL REF×0.85 REF×0.90 REF×0.95 V
VOUT Power Good High Voltage
VoutPH
REF×1.05 REF×1.10 REF×1.15 V
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2010.05 - Rev.C