ADP5037 Просмотр технического описания (PDF) - Analog Devices
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ADP5037 Datasheet PDF : 28 Pages
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Data Sheet
ADP5037
Parameter
VOLTAGE FEEDBACK
DROPOUT VOLTAGE4
Symbol
VFB3, VFB4
VDROPOUT
CURRENT-LIMIT THRESHOLD5
ACTIVE PULL-DOWN
OUTPUT NOISE
Regulator LDO1
Regulator LDO2
POWER SUPPLY REJECTION
RATIO
Regulator LDO1
ILIMIT3, ILIMIT4
RPDWN-L
NOISELDO1
NOISELDO2
PSRR
Regulator LDO2
Test Conditions/Comments
VOUT3 = VOUT4 = 5.2 V, IOUT3 = IOUT4 = 300 mA
VOUT3 = VOUT4 = 3.3 V, IOUT3 = IOUT4 = 300 mA
VOUT3 = VOUT4 = 2.5 V, IOUT3 = IOUT4 = 300 mA
VOUT3 = VOUT4 = 1.8 V, IOUT3 = IOUT4 = 300 mA
Channel disabled
10 Hz to 100 kHz, VIN3 = 5 V, VOUT3 = 2.8 V
10 Hz to 100 kHz, VIN4 = 5 V, VOUT4 = 1.2 V
10 kHz, VIN3 = 3.3 V, VOUT3 = 2.8 V, IOUT3 = 1 mA
100 kHz, VIN3 = 3.3 V, VOUT3 = 2.8 V, IOUT3 = 1 mA
1 MHz, VIN3 = 3.3 V, VOUT3 = 2.8 V, IOUT3 = 1 mA
10 kHz, VIN4 = 1.8 V, VOUT4 = 1.2 V, IOUT4 = 1 mA
100 kHz, VIN4 = 1.8 V, VOUT4 = 1.2 V, IOUT4 = 1 mA
1 MHz, VIN4 = 1.8 V, VOUT4 = 1.2 V, IOUT4 = 1 mA
Min Typ
0.491 0.5
50
75
100
180
335 600
600
Max Unit
0.509 V
mV
140 mV
mV
mV
mA
Ω
100
µV rms
60
µV rms
60
dB
62
dB
63
dB
54
dB
57
dB
64
dB
1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
2 This is the input current into VIN3/VIN4, which is not delivered to the output load.
3 Based on an endpoint calculation using 1 mA and 300 mA loads.
4 Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage. This applies only to output voltages
above 1.7 V.
5 Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 3.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 3.0 V, or 2.7 V.
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
TA = −40°C to +125°C, unless otherwise specified.
Table 5.
Parameter
NOMINAL INPUT AND OUTPUT CAPACITOR RATINGS
BUCK1, BUCK2 Input Capacitor Ratings
BUCK1, BUCK2 Output Capacitor Ratings
LDO1 Input and Output Capacitor Ratings
CAPACITOR ESR
Symbol
CMIN1, CMIN2
CMIN1, CMIN2
CMIN3, CMIN4
RESR
Min
4.7
10
1.0
0.001
Typ
Max
Unit
40
µF
40
µF
µF
1
Ω
1 The minimum input and output capacitance should be greater than 0.70 µF over the full range of operating conditions. The full range of operating conditions in the
application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R- and X5R-type capacitors are recommended;
Y5V and Z5U capacitors are not recommended for use because of their poor temperature and dc bias characteristics.
Rev. D | Page 5 of 28
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