参数资料
| 型号： | NCV898031D1R2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 8SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 2.2MHz |
| 占空比： | 90% |
| 电源电压： | 3.2 V ~ 40 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | * |
| 包装： | * |
NCV898031
ELECTRICAL CHARACTERISTICS ( ? 40 ° C < T J < 150 ° C, 3.2 V < V IN < 40 V, unless otherwise specified) Min/Max values are
guaranteed by test, design or statistical correlation.
Characteristic
Symbol
Conditions
Min
Typ
Max
Unit
GENERAL
Quiescent Current, Sleep Mode
Quiescent Current, Sleep Mode
Quiescent Current, No switching
Quiescent Current, Switching,
normal operation
I q,sleep
I q,sleep
I q,off
I q,on
V IN = 13.2 V, EN = 0, T J = 25 ° C
V IN = 13.2 V, EN = 0, ? 40 ° C < T J < 125 ° C
Into VIN pin, EN = 1, No switching
Into VIN pin, EN = 1, Switching
?
?
?
?
2.0
2.0
1.5
4.0
?
6.0
2.5
6.0
m A
m A
mA
mA
OSCILLATOR
Minimum pulse width
Maximum duty cycle
Switching frequency
t on,min
D max
f s
30
85
1.8
65
88
2.0
90
90
2.2
ns
%
MHz
Soft ? start time
Soft ? start delay
Slope compensating ramp
t ss
t ss,dly
S a
From start of switching with V FB = 0 until
reference voltage = V REF
From EN → 1 until start of switching with
V FB = 0 with V C pin compensation network
disconnected
520
80
28
650
100
34
780
280
40
m s
m s
mV/ m s
ENABLE
EN pull ? down current
EN input high voltage
EN input low voltage
EN time ? out ratio
I EN
V s,ih
V s,il
%t en
V EN = 5 V
From EN falling edge, to oscillator control
(EN high) or shutdown (EN low), Percent of
typical switching frequency
?
2.0
0
?
5.0
?
?
250
10
5.0
800
350
m A
V
mV
%
CURRENT SENSE AMPLIFIER
Low ? frequency gain
Bandwidth
ISNS input bias current
Current limit threshold voltage
Current limit,
Response time
Overcurrent protection,
Threshold voltage
Overcurrent protection,
Response Time
A csa
BW csa
I sns,bias
V cl
t cl
%V ocp
t ocp
Input ? to ? output gain at dc, ISNS v 1 V
Gain of A csa ? 3 dB
Out of ISNS pin
Voltage on ISNS pin
CL tripped until GDRV falling edge,
V ISNS = V cl (typ) + 60 mV
Percent of V cl
From overcurrent event, Until switching
stops, V ISNS = V OCP + 40 mV
0.9
2.5
?
360
?
125
?
1.0
?
30
400
80
150
80
1.1
?
50
440
125
175
125
V/V
MHz
m A
mV
ns
%
ns
VOLTAGE ERROR OPERATIONAL TRANSCONDUCTANCE AMPLIFIER
Transconductance
VEA output resistance
VFB input bias current
Reference voltage
VEA maximum output voltage
VEA minimum output voltage
VEA sourcing current
VEA sinking current
g m,vea
R o,vea
I vfb,bias
V ref
V c,max
V c,min
I src,vea
I snk,vea
V FB – V ref = ± 20 mV
Current out of VFB pin
VEA output current, Vc = 2.0 V
VEA output current, Vc = 0.7 V
0.92
2.0
?
1.176
2.5
?
80
80
1.28
?
0.5
1.200
?
?
100
100
1.63
?
2.0
1.224
?
0.3
?
?
mS
M W
m A
V
V
V
m A
m A
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