參數(shù)資料
型號： P95020ZNQGI8
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132
封裝： QFN-132
文件頁數(shù)： 128/137頁
文件大小： 3533K
代理商： P95020ZNQGI8
P95020 / Preliminary Datasheet
Revision 0.7.10
90
2010 Integrated Device Technology, Inc.
10.1 BOOST5 - ELECTRICAL CHARACTERISTICS
Unless otherwise specified, typical values at TA =25C, VEXT=VSYS = 3.8V, VBOOST5_OUT=5V, TA = -40°C to +85°C,
SYMBOL
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
VIN
Input Voltage (External)
3.0
4.5
V
VOUT
Programmable Output Voltage Range
VIN cannot be higher than VOUT
Note 2
4.05
5.0
V
V
OUT
Output Voltage Step Size
0.050
V
VO-PWM
Overall Output Voltage Accuracy
VSYS =3.0V to 4.5V
Note 1
COUT=20F, and L=2.2H
-3
+3
%
SETPOINT
Output Voltage Set Point Accuracy
Measure at the BOOST5_OUT pin
-2
+2
%
ILOUT-PEAK
Peak Inductor Current Limit
0xA089 [3:2] = 11b
1.5
1.7
2.0
A
RDS-ON-HS
Synchronous Rectifier On Resistance
ISW = -50mA
0.18
RDS-ON-LS
Low Side Switch On Resistance
ISW = 50mA
0.18
ISRTH
Synchronous Rectifier Operation
Threshold Current
+40
mA
fPWML
Clock Frequency (Low PWM Mode)
Crystal Note.
0.5
MHz
fPWMH
Clock Frequency (High PWM Mode)
Crystal Note.
1.0
MHz
IQN
Quiescent Operating Current
Operating, Non-Switching, No Load
BOOST5_OUTPUT 0x88 [7:7] =1 (Enable)
0.75
mA
DMAX
Maximum PWM Duty Cycle
90
%
tON(MIN)
Minimum Low Side Switch On Time
100
ns
ILEAKSW
Leakage Current Into SW pin
Shutdown Mode, VSW = 4.5V
1
A
ILEAKVOUT
Leakage Current Into VOUT pin
Shutdown Mode, VOUT = 5.0V, VSW = 0V
1
A
UVLO
Under Voltage Lock Out Threshold
VSYS Rising
2.85
2.95
V
UVLOHYST
Under Voltage Lock Out Hysteresis
150
mV
Notes:
1.
Guaranteed by design and/or characterization
2.
External Schottky diode is required between BOOST5_OUT and BOOST5_SW if VOUT is 4.5V or greater.
3.
Clock will be coming from external crystal through PLL. The resultant frequency will be in 1% range from the
nominal.
10.2 BOOST5 - REGISTER SETTINGS
Register 0xA088 and Register 0xA089 control and monitor the BOOST5 Power Supply. The regulator can be
programmed by writing 8-bit control words to these registers. The Base addresses are defined in Table 3 – Register
10.2.1
BOOST5 - Output Voltage Register
The Output Voltage Register contains the Enable Bit and the Output Voltage settings
IC Address = Page-0: 136(0x88), C Address = 0xA088
Bit
Bit Name
Def.
Set.
User
Type
Value
Description / Comments
[4:0]
BOOST5_VOUT
10011b
RW
(See
Output Voltage = BOOST5_VOUT * 0.05V + 4.05V
[6:5]
RESERVED
00b
RW
RESERVED
7
ENABLE
0b
RW
1 = Enable
0 = Disable
Enable BOOST5
Note
– Default voltage setting V
OUT = 5.00 V.
Table 24
– Register 0xA088 Output Voltage Bit Setting [4:0]
Bit
Setting
Output
Voltage
Bit
Setting
Output
Voltage
Bit
Setting
Output
Voltage
00000
4.05
00111
4.40
01110
4.75
00001
4.10
01000
4.45
01111
4.80
00010
4.15
01001
4.50
10000
4.85
00011
4.20
01010
4.55
10001
4.90
00100
4.25
01011
4.60
10010
4.95
00101
4.30
01100
4.65
10011
5.00
00110
4.35
01101
4.70
Note
– Contains an initial 4.05V offset.
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