參數(shù)資料
型號: FAN8048
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 運動控制電子
英文描述: 2 DC-DC Converter & 4-CH PWM Motor IC
中文描述: DISK DRIVE MOTOR CONTROLLER, 0.5 A, PDSO48
封裝: 7 X 7 MM, LQFP-48
文件頁數(shù): 8/34頁
文件大?。?/td> 903K
代理商: FAN8048
FAN8048
8
Electrical characteristics
(Continued)
(PVCC=VIN=2.4V, VSYS1=VSYS2=2.7V, VG=7.0V, DCIN=0V, C
PCT
=470pF, Ta=25
°
C,unless otherwise specifid)
Parameter
VSYS2 OPTION CIRCUIT
VSYS2 voltage at buck mode
operation
Load stability of VSYS2 at buck
mode operation
OSCILLATOR (PCT)
Source current
Sink current
Oscillation frequency1
Symbol
Conditions
Min.
Typ.
Max.
Unit
V
BUCK
VIN=2.4V, VSYS2=1.8V
ISYS2=100mA
VIN=2.4V, VSYS2=1.8V
ISYS2=0
100mA
-
1.8
-
V
V
LS
-30
0
30
mV
I
SOURCE
I
SINK
F
OSC1
-
-
34
11
45
42
14
60
50
17
75
μ
A
μ
A
KHz
No CLK, At self oscillation
CLK=88.2kHz,
At synchronization mode
CLK=88.2kHz
Oscillation frequency2
F
OSC2
85.2
88.2
91.2
KHz
Maximum duty ratio (Note1)
OUTPUT SWITCHES
On resistance of upper switch
On resistance of lower switch
Leakage current of upper switch
Leakage current of lower switch
POWER-ON RESET
RST threshold voltage1
Hysteresis voltage1
RST threshold voltage2
Hysteresis voltage2
CONTROL INPUT
D
MAX
75
%
R
ONSWU
R
ONSWL
I
LSWU
I
LSWL
Switch A and D, ISYS=500mA
Switch B and C, ISYS=500mA
Switch A and D
Switch B and C
-
-
-
-
0.4
0.4
0
0
0.6
0.6
2
2
μ
A
μ
A
V
RST1
V
RST1
V
RST2
V
RST2
VIN=2.4V, VSYS2=1.0
1.8V
VIN=2.4V, VSYS2=1.8
1.0V
VSYS2=2.7V, VIN=1.0
1.8V
VSYS2=2.7V, VIN=1.8
1.0V
1.20
40
1.30
50
1.35
70
1.45
80
1.50
100
1.60
110
V
mV
V
mV
System-on threshold voltage
V
ONTH
VSYS1=VSYS2=0V
-
VIN -
0.65
V
System-on input low level voltage
System-on input current
V
ONL
I
ON
VSYS1=VSYS2=0V
VON=0V
VIN -1.0
-
-
V
μ
A
6
16
26
System-off threshold voltage
V
OFFTH
-
VSYS1-
1.15
V
System-off input low level voltage
V
OFFL
-
VSYS1-
1.4
-85
-
V
System-off input current
H-BRIDGE PWM DRIVER PART
(CH1)
Out on Resistance
Input Resistance
High level Input voltage
Low level Input voltage
Rising Time (Note1)
Falling Time (Note1)
Minimum Pulse Width (Note1)
I
OFF
-
-70
-55
μ
A
R
ON1
R
IN1
V
IH1
V
IL1
T
RISE1
T
FALL1
T
MIN1
Top + bottom switches
-
-
2.0
50
-
-
0.2
0.2
300
3.0
-
-
0.5
-
-
-
K
V
V
μ
s
μ
s
ns
-
-
-
-
-
-
2.2
-
-
-
-
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