AN30182A Datasheet, PDF (9/44 Pages) Panasonic Semiconductor – 600mA Synchronous DC-DC Step Down Regulator (2ch) 300mA LDO Regulator (6ch) Multi Power Supply (High Efficiency Power LSI)

AN30182A
APPLICATION INFORMATION (Continued)
V_VBAT(DDVBAT1 = DDVBAT2 = VB = VIN2) = 3.1V to 4.5V, V_DVDD = 1.85V
DC-DC : Co = 4.7 µF, Lo = 1 µH / LDO : Co =1.0 µF
T_a = 25 °C ± 2 °C unless otherwise noted.
Parameter
Symbol
Conditions
[DCDC1 ] (DC-DC Step Down Regulator)
Output Voltage
VDCDC1
IDCDC1 = – 300 mA
Vout = 1.2 V setting
Consumption current on active IREGDCCD1 IDCDC1 = 0 mA
Output over current limit
From FB1 × 100% to FB1 ×
ILIMDCDC1 70%
VB = 3.7 V
Efficiency 1
DDVBAT1 = 3.4 V
EFFDCDC11 VDCDC1 = 2.4 V
IDCDC1 = – 150 mA
Efficiency 2
DDVBAT1 = 3.7 V
EFFDCDC12 VDCDC1 = 1.2 V
IDCDC1 = – 150 mA
LX leak current
ILXL1
DDVBAT1 = 5.5 V
DCDC1 = Disable
VLX1 = 0 V or 5.5 V
Discharge resistance
RDISDCDC1
—
[DC-DC2 ] (DC-DC Step Down Regulator)
Output Voltage
VDCDC2
IDCDC2 = – 300 mA
Vout = 1.85 V setting
Consumption current on active IREGDCCD2 IDCDC2 = 0 mA
Output overcurrent limit
From FB2 × 100% to FB2 ×
ILIMDCDC2 70%
VB = 3.7 V
Efficiency 1
DDVBAT2 = 3.4 V
EFFDCDC21 VDCDC2 = 2.4 V
IDCDC2 = – 150 mA
Efficiency 2
LX leak current
Discharge resistance
DDVBAT2 = 3.7 V
EFFDCDC22 VDCDC2 = 1.85 V
IDCDC2 = – 150 mA
ILXL2
DDVBAT2 = 5.5 V
DCDC2 = Disable
VLX2 = 0 V or 5.5 V
RDISDCDC2
—
Reference values
Unit ^Notes
Min Typ Max
1.17 1.200 1.23 V *2
10
25
40 μA *2
—
1.0
1.2 A *2
85
90
— % *2
75
80
— % *2
–1
0
1 μA *2
0.5 1.0 2.0 kΩ *2
1.803 1.850 1.897 V *2
10
25
40 μA *2
—
1.0
1.2 A *2
85
90
— % *2
80
85
— % *2
–1
0
1 μA *2
0.5 1.0 2.0 kΩ *2
Notes) *2:Checked by design, not production tested.
9
Ver. BEB