CAT6221(2009) 查看數據表（PDF） - ON Semiconductor
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CAT6221 Datasheet PDF : 10 Pages
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CAT6221
Table 3. ELECTRICAL OPERATING CHARACTERISTICS (Note 3)
(VIN = VOUT + 1.0 V, VEN = High, IOUT = 100 mA, CIN = COUT = 1 mF, ambient temperature of 25°C (over recommended operating
conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range.)
Symbol
Parameter
Conditions
Min Typ Max
Unit
VOUT−ACC Output Voltage Accuracy
Initial accuracy (Note 4)
−1.0
−2.0
+1.0
%
+2.0
TCOUT
VR−LINE
Output Voltage Temp. Coefficient
Line Regulation
VIN = VOUT + 1.0 V to 5.5 V
40
−0.2 ±0.1 +0.2
−0.4
+0.4
ppm/°C
%/V
VR−LOAD Load Regulation
IOUT = 100 mA to 300 mA
0.9
1.5
%
2
VDROP Dropout Voltage (Note 5)
IOUT = 300 mA
210 280
mV
350
IGND
Ground Current
Both LDOs Enabled
IOUT = 0 mA
100 140
mA
170
Both LDOs Enabled
IOUT = 300 mA
One LDO Enabled
IOUT = 0 mA
160
55
75
90
IGND−SD Shutdown Ground Current
One LDO Enabled
IOUT = 300 mA
VEN < 0.4 V
85
2
mA
4
PSRR Power Supply Rejection Ratio
f = 1 kHz
60
dB
f = 20 kHz
45
ISC
Output short circuit current limit
TON
Turn−On Time
eN
Output Noise Voltage (Note 6)
ROUT−SH Shutdown Switch Resistance
VIN−UVLO Under voltage lockout threshold
ESR
COUT equivalent series resistance
ENABLE INPUT (EN1, EN2)
VOUT = 0 V
BW = 10 Hz to 100 kHz
130
mA
150
ms
95
mVrms
250
W
2.15
V
5
500
mW
VHI
Logic High Level
VLO
Logic Low Level
IEN
Enable Input Current
THERMAL PROTECTION
VIN = 2.3 to 5.5 V
VIN = 2.3 to 5.5 V
VEN = 0.4 V
VEN = VIN
1.8
V
0.4
V
0.05
1
mA
0.1
1
TSD
Thermal Shutdown
160
°C
THYS
Thermal Hysteresis
10
°C
3. Specification for 2.8 V output version unless specified otherwise.
4. For VOUT < 2.0 V, the initial accuracy is ±2% and across temp is ±3%.
5. Dropout voltage is defined as the input−to−output differential at which the output voltage drops 2% below its nominal value measured at 1 V
differential. During test, the input voltage stays always above the minimum 2.3 V.
6. Specification for 1.8 V output version.
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