参数资料
| 型号： | NCP5217AMNTXG |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 14-QFN |
| 标准包装： | 3,000 |
| PWM 型： | 电流/电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 电源电压： | 4.5 V ~ 27 V |
| 降压： | 是 |
| 升压： | 无 |
| 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 ~ 85°C |
| 封装/外壳： | 14-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 其它名称： | NCP5217AMNTXG-ND NCP5217AMNTXGOSTR |
NCP5217A
ELECTRICAL CHARACTERISTICS (V IN = 12 V, V CC = 5 V, T A = ? 40 ° C to 85 ° C, unless other noted)
Characteristics
Symbol
Test Conditions
Min
Typ
Max
Unit
INTERNAL SOFT ? START
Soft ? Start Time
T SS
0.9
1.1
1.3
ms
VOLTAGE ERROR AMPLIFIER
DC Gain
Unity Gain Bandwidth
Slew Rate
FB Bias Current
GAIN_VEA
BW_VEA
SR_VEA
Ibias_FB
(Note 2)
(Note 2)
COMP PIN TO GND = 100 pF (Note 2)
88
15
2.5
0.1
dB
MHz
V/ m s
m A
Output Voltage Swing
Vmax_EA
Vmin_EA
Isource_EA = 2 mA
Isink_EA = 2 mA
3.3
3.5
0.15
0.3
V
DIFFERENTIAL CURRENT SENSE AMPLIFIER
CS+ and CS ? Common ? mode
Input Signal Range
Input Bias Current
Input Signal Range
VCSCOM_MAX
CS_IIB
CS_range
Refer to AGND
? 100
? 70
3.5
100
70
V
nA
mV
Offset Current at IDRP
IDRP_offset
(CS+) ? (CS ? ) = 0 V
? 1.0
1.0
m A
[(CS+) ? (CS ? )] to IDRP Gain
IDRP_GAIN
(IDRP/((CS+) ?
(CS ? )))
(CS+) ? (CS ? ) =
10 mV, V(IDRP) =
0.8 V
T A = 25 ° C
T A = ? 40 ° C to 85 ° C
0.475
0.425
0.525
0.575
0.625
m A/mV
Current ? Sense Bandwidth
Maximum IDRP Output Voltage
Minimum IDRP Output Voltage
BW_CS
IDRP_Max
IDRP_Min
At ? 3dB to DC Gain (Note 2)
(CS+) ? (CS ? ) = 70 mV, Isource drops to
95% of the value when V (IDRP) = 0.8 V
2.5
20
0
MHz
V
V
IDRP Output current
I_IDRP
? 1.0
35
m A
OVERCURRENT PROTECTION SETTING
Overcurrent Threshold (OCTH)
Detection Current
I_OCSET
Sourced from OCP before soft ? start,
Rocp = 16.7 k W is connected from OCP to
AGND or FB
21.6
24
26.4
m A
Ratio of OC Threshold over
OCSET Voltage
OCSET Voltage for Default
Fixed OC Threshold
K_OCSET
VOCSET_DFT
V((CS+) ? (CS ? )) / V_OCSET
(Note 2)
Rocp v 2 k W is connected from OCP to
AGND or FB
0.1
100
?
mV
OCSET Voltage for Adjustable
OC Threshold
OCSET Voltage for OC Disable
VOCSET_ADJ
VOCSET_DIS
Rocp = 8.3 ~ 25 k W is connected from OCP
to AGND or FB
Rocp w 35 k W is connected from OCP to
AGND or FB
200
720
600
mV
mV
Default Fixed OC Threshold
V_OCTH_DFT
(CS+) – (CS ? ), Pin IDRP/OCP is shorted to
AGND or FB
35
40
45
mV
Adjustable OC Threshold
V_OCTH
((CS+) ? (CS ? ))
(CS+) – (CS ? ),
During OC threshold,
set a voltage at pin
OCP
VOCSET = 200 mV
VOCSET = 600 mV
15
52
20
60
25
68
mV
GATE DRIVERS
DH Pull ? HIGH Resistance
DH Pull ? LOW Resistance
DL Pull ? HIGH Resistance
DL Pull ? LOW Resistance
RH_DH
RL_DH
RH_DL
RL_DL
200 mA Source current
200 mA Sink current
200 mA Source current
200 mA Sink current
2.5
1.5
2
0.75
W
W
W
W
2. Guaranteed by design, not tested in production.
http://onsemi.com
5
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