参数资料
型号: FAN1577AMX
厂商: Fairchild Semiconductor
文件页数: 5/15页
文件大小: 0K
描述: IC REG CTRLR BST PWM VM 20-SOIC
标准包装: 1
PWM 型: 电压模式
输出数: 2
频率 - 最大: 372kHz
占空比: 95%
电源电压: 10 V ~ 15 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
包装: 标准包装
其它名称: FAN1577AMXDKR
Electrical Characteristics
V CC =12V and T A = -40°C to +85°C unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
V CC UVLO
V CC_ON
V CC_HYS
Turn-On Threshold
UVLO Hysteresis
V CC Ramp-Up
V CC Ramp-Down
9.5
1.5
10.0
2.0
10.5
2.5
V
V
Oscillator
F OSC
F OSC,RT
D ON_MAX
Oscillator Frequency
Total Accuracy
Maximum Duty Cycle
R RT =OPEN
R RT =GND
20k Ω < R RT
55
308
-10
85
61
340
90
67
372
10
95
KHZ
%
%
Error Amplifier
T A =-40~85 C
MV/ C
V REF
V REF
Internal Reference Voltage
V REF Temperature Coefficient
(1)
V CC =8V, V CC =15V, T A =25°C
o
0.693
0.700
0.03
0.707
V
O
A VOL
BW
Open-Loop Voltage Gain
Unity Gain Bandwidth
77
3.5
DB
MHZ
I SOURCE
I SINK
Output Source Current
Output Sink Current
IN1=IN2=0.6V
IN1=IN2=0.8V
60
250
80
400
100
600
μA
μA
V H RAMP_PEAK Peak of V RAMP
V RAMP_VALLEY Valley of V RAMP
Gate Output=D ON_MAX
No Gate Output
2.45
1.05
2.80
1.20
3.15
1.35
V
V
Two-Stage Soft-Start
1 Soft-Start Charge Current
I SRC_1
st
V CLP < V CLN , V SS_Transition > V SS
28
35
42
μA
I SRC_2
2
nd
Soft-Start Charge Current
V CLP < V CLN , V SS_Transition < V SS
13
16
19
μA
I SOURCE_1 Transit to
I SOURCE_2
V SS_TRANSITION Soft-Start Transition Point
st
nd
1.40
1.42
1.44
V
See Figure 6
I SINK
Soft-Start Discharge Current
V CLP > V CLN
50
μA
Protections
I OCSET
OC Sink Current
V CC =12V
90
120
150
μA
T OT
T OT_HYS
Over-Temperature
Over-Temperature Hysteresis
150
20
°C
°C
V OVP
Over-Voltage Protection of IN
V OVP /V IN
118
122
126
%
Output
I DH
High-Side Current Source
V BST - V CLN =12V, V DH -
V CLN =6V
1.0
1.8
A
R DH
High-Side Sink Resistor
V BST - V CLN =12V
2.8
3.8
?
I DL
Low-Side Current Source
V CC =12V, V DL =6V
1.0
1.8
A
R DL
Low-Side Sink Resistor
V CC =12V
2.8
3.8
?
T DT
Dead Time
(2)
V CC =12V, D H & D L =1000pF
50
70
90
NS
Total Operating Current
I CC_OP
I CC_SBY
Operating Supply Current
Standby Current (Disabled)
V CC =12V, No Load
SS1/ENB=SS2/ENB=0V
3.3
4.3
0.7
5.3
1.0
MA
MA
Notes:
1. Not tested in production; 30 pieces sampled.
2. When V DL falls less than 2V relative to V DH rising to 2V.
? 2010 Fairchild Semiconductor Corporation
FAN1577A ? Rev. 1.0.0
5
www.fairchildsemi.com
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