BCD AP2401B14KTR-E1 Dual ldo regulator Datasheet

Data Sheet
DUAL LDO REGULATORS
AP2401
General Description
Features
The AP2401 series are dual positive voltage regulator
ICs fabricated by CMOS process. Each of these ICs
consists of a voltage reference, two error amplifiers,
two resistor networks for setting output voltages. Each
channel has a current limit circuit for current protection.
·
The AP2401 series feature high ripple rejection, low
dropout voltage, low noise, high output voltage accuracy, and low current consumption which make them
ideal for use in various battery-powered devices. The
chip enable function allows the output of each channel
to be turned on/off independently, greatly reducing the
power consumption.
·
·
·
·
·
·
·
Applications
·
·
·
·
·
The AP2401 series have 1.8V/2.5V, 1.8V/2.8V, 1.8V/
3.3V and 2.8V/1.8V versions.
The AP2401 are available in standard SOT-23-6 package.
Maximum Output Current/Channel: More Than
150mA (300mA Limit)
High Output Voltage Accuracy: ±2%
Low Quiescent Current/Channel: 25µA Typical
Low Standby Current: 0.1µA Typical
High PSRR: 70dB Typical (f=1kHz)
Extremely Low Noise: 30µVrms (10Hz to
100kHz)
Operating Temperature: -40 to 85oC
Compatible with Low ESR Ceramic Capacitor
·
Mobile Phones, Cordless Phones
Wireless Communication Equipment
Portable Games
Cameras, Video Recorders
Sub-board Power Supplies for Telecom Equipment
Battery Powered Equipment
SOT-23-6
Figure 1. Package Type of AP2401
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
1
Data Sheet
DUAL LDO REGULATORS
AP2401
Pin Configuration
K Package
(SOT-23-6)
CE1
1
6
VOUT1
VIN
2
5
GND
CE2
3
4
VOUT2
Figure 2. Pin Configuration of AP2401 (Top View)
Pin Description
Pin Number
Pin Name
Function
1
CE1
On/Off control 1, logic high=enable; logic low=shutdown
2
VIN
Input voltage
3
CE2
On/Off control 2, logic high=enable; logic low=shutdown
4
VOUT2
5
GND
6
VOUT1
Output voltage 2
Ground
Output voltage 1
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
2
Data Sheet
DUAL LDO REGULATORS
AP2401
Functional Block Diagram
CE1
1
On/Off
Control
Error
Amplifier 1
6
Current
Limit
VR1
Each Circuit
VIN
GND
2
5
VR2
Each Circuit
CE2
VOUT1
3
Error
Amplifier 2
Current
Limit
4
VOUT2
On/Off
Control
Voltage
Reference
Figure 3. Functional Block Diagram of AP2401
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
3
Data Sheet
DUAL LDO REGULATORS
AP2401
Ordering Information
AP2401
E1: Lead Free
Circuit Type
TR: Tape and Reel
B: Active High
(Without Built-in Pull-down Resistor)
Package
1: Fixed Output 1.8V (Channel 1)
3: Fixed Output 2.8V (Channel 1)
K: SOT-23-6
1: Fixed Output 1.8V (Channel 2)
2: Fixed Output 2.5V (Channel 2)
3: Fixed Output 2.8V (Channel 2)
4: Fixed Output 3.3V (Channel 2)
Package
SOT-23-6
Temperature
Range
-40 to 85oC
Packing
Type
Condition
Output
Voltages
Active High Without Built-in Pull-down
Resistor
1.8V/2.5V
AP2401B12KTR-E1
E9P
Tape & Reel
Active High Without Built-in Pull-down
Resistor
1.8V/2.8V
AP2401B13KTR-E1
E9Q
Tape & Reel
Active High Without Built-in Pull-down
Resistor
1.8V/3.3V
AP2401B14KTR-E1
E9R
Tape & Reel
Active High Without Built-in Pull-down
Resistor
2.8V/1.8V
AP2401B31KTR-E1
E8R
Tape & Reel
Part Number
Marking ID
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
4
Data Sheet
DUAL LDO REGULATORS
AP2401
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Input Voltage
VIN
6.5
V
Enable Input Voltage
VCE
6.5
V
IOUT1+IOUT2
700
mA
Power Dissipation (TA=25oC)
PD
250
mW
Junction Temperature
TJ
150
oC
TSTG
-65 to 150
TLEAD
260
oC
ESD
3000
V
Output Current (TA=25oC)
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
ESD (Human Body Model)
o
C
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated
under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods
may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
Input Voltage
VIN
Operating Junction Temperature Range
TJ
Min
-40
Sep. 2007 Rev. 1. 2
Max
Unit
6
V
85
oC
BCD Semiconductor Manufacturing Limited
5
Data Sheet
DUAL LDO REGULATORS
AP2401
Electrical Characteristics
(Channel 1/Channel 2: VIN=VOUT+1V, TJ=25oC, CIN=1µF, COUT=1µF, unless otherwise specified.)
Parameter
Output Voltage Accuracy
Input Voltage
Maximum Output Current
Symbol
∆VOUT/VOUT
Conditions
Variation from specified
VOUT, IOUT=30mA
Line Regulation
VRLINE
VOUT+1V≤VIN≤6V
IOUT=30mA, VCE=VIN
Power Supply
Rejection Ratio
PSRR
%
6
V
mA
mV
0.01
0.2
%/V
VOUT=1.8V
60
70
VOUT=2.5V
45
55
VOUT=2.8V
45
55
VOUT=3.3V
35
45
VOUT=1.8V
175
195
VOUT=2.5V
135
160
VOUT=2.8V
135
160
VOUT=3.3V
125
150
VCE=VIN=VOUT+1V,
IOUT=0mA
25
45
µA
VCE in OFF mode
0.1
1
µA
Ripple 0.5Vp-p, f=1kHz
VIN=VOUT+1V, IOUT=30mA
70
dB
±100
ppm/oC
IOUT=100mA
ISTD
2
60
VDROP
Standby Current
Unit
15
IOUT=30mA
IQ
Max
150
Load Regulation
Output Voltage
Temperature Coefficient
-2
IOUT
1mA≤IOUT≤100mA
Quiescent Current
Typ
VIN
VRLOAD
Dropout Voltage
Min
(∆VOUT/VOUT)/∆T IOUT=30mA, -40oC≤TJ≤85oC
mV
Current Limit
ILIMIT
VCE=VIN
300
mA
Short Circuit Current
ISHORT
VCE=VIN, VOUT=0
30
mA
RMS Output Noise
VNOISE
TA=25oC
10Hz ≤f≤100kHz
30
µVrms
CE "High" Voltage
CE input voltage "High"
CE "Low" Voltage
CE input voltage "Low"
Sep. 2007 Rev. 1. 2
1.3
6
V
0.25
V
BCD Semiconductor Manufacturing Limited
6
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics
3.0
2.0
1.8
2.5
1.4
Output Voltage (V)
Output Voltage (V)
1.6
1.2
1.0
0.8
1.8V (Channel 1)
o
TJ=-40 C
0.6
2.5V (Channel 2)
o
TJ=-40 C
2.0
o
TJ=25 C
1.5
o
TJ=85 C
1.0
o
0.4
TJ=25 C
0.2
TJ=85 C
0.5
o
0.0
0.0
0
50
100
150
200
250
300
350
400
0
50
100
200
250
300
350
400
Figure 5. Output Voltage vs. Output Current
Figure 4. Output Voltage vs. Output Current
3.5
3.0
3.0
Output Voltage (V)
2.5
Output Voltage (V)
150
Output Current (mA)
Output Current (mA)
2.0
1.5
2.8V (Channel 2)
o
TJ=-40 C
1.0
2.5
2.0
1.5
3.3V (Channel 2)
o
TJ=-40 C
1.0
o
o
TJ=25 C
0.5
TJ=25 C
0.5
o
o
TJ=85 C
TJ=85 C
0.0
0.0
0
50
100
150
200
250
300
350
0
400
Output Current (mA)
50
100
150
200
250
300
350
400
Output Current (mA)
Figure 7. Output Voltage vs. Output Current
Figure 6. Output Voltage vs. Output Current
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
7
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
3.0
2.0
1.8
2.5
1.8V (Channel 1)
o
TJ=25 C
1.4
Output Voltage (V)
Output Voltage (V)
1.6
VIN=2.1V
1.2
VIN=4V
1.0
VIN=6V
0.8
0.6
0.4
2.5V (Channel 2)
o
TJ=25 C
2.0
VIN=2.8V
1.5
VIN=4V
VIN=6V
1.0
0.5
0.2
0.0
0.0
0
50
100
150
200
250
300
350
400
0
450
50
100
150
200
250
300
350
400
Output Current (mA)
Output Current (mA)
Figure 9. Output Voltage vs. Output Current
Figure 8. Output Voltage vs. Output Current
3.0
3.2
2.8
Output Voltage (V)
Output Voltage (V)
2.5
2.0
1.5
2.8V (Channel 2)
o
TJ=25 C
1.0
VIN=3.1V
VIN=3.6V
2.0
VIN=4V
1.6
VIN=6V
1.2
0.8
VIN=4V
0.5
3.3V (Channel 2)
o
TJ=25 C
2.4
0.4
VIN=6V
0.0
0.0
0
50
100
150
200
250
300
350
0
400
50
100
150
200
250
300
350
400
Output Current (mA)
Output Current (mA)
Figure 11. Output Voltage vs. Output Current
Figure 10. Output Voltage vs. Output Current
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
8
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
3.0
2.0
1.8
2.5
Output Voltage (V)
Output Voltage (V)
1.6
1.4
1.2
1.0
1.8V (Channel 1)
o
TJ=25 C
0.8
0.6
2.0
1.5
2.5V (Channel 2)
o
TJ=25 C
1.0
IOUT=0mA
IOUT=0mA
0.4
IOUT=30mA
0.2
IOUT=100mA
IOUT=30mA
0.5
IOUT=100mA
0.0
0.0
0
1
2
3
4
5
0
6
1
2
Input Voltage (V)
4
5
6
Figure 13. Output Voltage vs. Input Voltage
Figure 12. Output Voltage vs. Input Voltage
3.0
3.5
3.0
Output Voltage (V)
2.5
Output Voltage (V)
3
Input Voltage (V)
2.0
1.5
2.8V (Channel 2)
o
TJ=25 C
1.0
IOUT=0mA
2.5
2.0
3.3V (Channel 2)
o
TJ=25 C
1.5
1.0
IOUT=0mA
IOUT=30mA
0.5
IOUT=30mA
0.5
IOUT=100mA
0.0
IOUT=100mA
0.0
0
1
2
3
4
5
6
0
Input Voltage (V)
1
2
3
4
5
6
Input Voltage (V)
Figure 15. Output Voltage vs. Input Voltage
Figure 14. Output Voltage vs. Input Voltage
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
9
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
350
450
400
1.8V (Channel 1)
o
TJ=-40 C
o
TJ=25 C
300
2.5V (Channel 2))
o
TJ=-40 C
300
Dropout Voltage (mV)
Dropout Voltage (mV)
350
o
TJ=85 C
250
200
150
o
250
TJ=25 C
o
TJ=85 C
200
150
100
100
50
50
0
0
0
25
50
75
100
125
0
150
25
75
100
125
150
Output Current (mA)
Output Current (mA)
Figure 17. Dropout Voltage vs. Output Current
Figure 16. Dropout Voltage vs. Output Current
350
350
2.8V (Channel 2)
o
TJ=-40 C
o
TJ=25 C
250
3.3V (Channel 2)
o
TJ=-40 C
300
Dropout Voltage (mV)
300
Dropout Voltage (mV)
50
o
TJ=85 C
200
150
o
TJ=25 C
250
o
TJ=85 C
200
150
100
100
50
50
0
0
0
25
50
75
100
125
0
150
25
50
75
100
125
150
Output Current (mA)
Output Current (mA)
Figure 19. Dropout Voltage vs. Output Current
Figure 18. Dropout Voltage vs. Output Current
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
10
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
2.56
1.84
1.83
2.54
Output Voltage (V)
Output Voltage (V)
1.82
1.81
1.80
1.79
1.78
1.8V (Channel 1)
VIN=2.8V
1.77
IOUT=30mA
2.52
2.50
2.48
2.5V (Channel 2)
VIN=3.5V
2.46
IOUT=30mA
2.44
1.76
-25
0
25
50
-25
75
0
2.84
3.32
Output Voltage (V)
Output Voltage (V)
3.34
2.82
2.80
2.78
2.8V (Channel 2)
VIN=3.8V
50
3.28
3.26
3.3V (Channel 2)
VIN=4.3V
IOUT=30mA
3.22
-40
2.74
25
3.30
3.24
IOUT=30mA
0
75
Figure 21. Output Voltage vs. Junction Temperature
2.86
-25
50
Junction Temperature ( C)
Figure 20. Output Voltage vs. Junction Temperature
2.76
25
o
o
Junction Temperature ( C)
75
-20
0
20
40
60
80
o
o
Junction Temperature ( C)
Junction Temperature ( C)
Figure 22. Output Voltage vs. Junction Temperature
Figure 23. Output Voltage vs. Junction Temperature
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
11
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
90
90
1.8V (Channel 1)
o
TJ=-40 C
o
TJ=25 C
60
2.5V (Channel 2)
o
TJ=-40 C
75
Quiescent Current (µA)
Quiescent Current (µA)
75
o
TJ=85 C
45
30
15
o
TJ=25 C
o
TJ=85 C
60
45
30
15
0
0
0
1
2
3
4
5
6
0
1
2
Input Voltage (V)
Figure 24. Quiescent Current vs. Input Voltage
4
5
6
Figure 25. Quiescent Current vs. Input Voltage
90
90
2.8V (Channel 2)
o
TJ=-40 C
75
3.3V (Channel 2)
o
TJ=-40 C
75
o
o
TJ=25 C
Quiescent Current (µA)
Quiescent Current (µA)
3
Input Voltage (V)
o
TJ=85 C
60
45
30
TJ=25 C
o
TJ=85 C
60
45
30
15
15
0
0
0
1
2
3
4
5
0
6
1
2
3
4
5
6
Input Voltage (V)
Input Voltage (V)
Figure 27. Quiescent Current vs. Input Voltage
Figure 26. Quiescent Current vs. Input Voltage
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
12
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
31.0
30.0
29.5
28.5
2.5V (Channel 2)
VIN=3.5V
30.0
IOUT=0
Quiescent Current (µA)
Quiescent Current (µA)
30.5
1.8V (Channel 1)
VIN=2.8V
29.0
28.0
27.5
27.0
26.5
26.0
25.5
IOUT=0
29.5
29.0
28.5
28.0
27.5
27.0
25.0
26.5
24.5
24.0
-25
0
25
50
26.0
75
-25
o
25
50
75
Junction Temperature ( C)
Figure 29. Quiescent Current vs. Junction Temperature
Figure 28. Quiescent Current vs. Junction Temperature
32.0
31.0
30.5
31.5
2.8V (Channel 2)
VIN=3.8V
30.0
IOUT=0
29.5
3.3V (Channel 2)
VIN=4.3V
31.0
Quiescent Current (µA)
Quiescent Current (µA)
0
o
Junction Temperature ( C)
29.0
28.5
28.0
27.5
IOUT=0
30.5
30.0
29.5
29.0
28.5
27.0
28.0
26.5
27.5
27.0
26.0
-25
0
25
50
-25
75
0
25
50
75
o
Junction Temperature ( C)
o
Junction Temperature ( C)
Figure 31. Quiescent Current vs. Junction Temperature
Figure 30. Quiescent Current vs. Junction Temperature
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
13
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
7
VIN (1V/Div)
1.8V (Channel 1)
5
4
3
∆VOUT (50mV/Div)
50
0
-50
5
4
50
0
-50
-100
-100
Time (40µs/Div)
Time (40µs/Div)
Figure 33. Line Transient
Figure 32. Line Transient
(Conditions: IOUT=30mA, CIN=100nF, COUT=1µF)
(Conditions: IOUT=30mA, CIN=100nF, COUT=1µF)
7
6
VIN (1V/Div)
2.8V (Channel 2)
5
4
∆VOUT1 (100mV/Div)
VIN (1V/Div)
7
∆VOUT (50mV/Div)
2.5V (Channel 2)
6
50
0
-50
-100
Time (40µs/Div)
1.8V/2.5V
(Channel 1/Channel 2)
6
5
4
∆VOUT2
100
∆VOUT1
0
0
-50
-100
-100
-200
-150
Time (40µs/Div)
Figure 34. Line Transient
Figure 35. Line Transient
(Conditions: IOUT=30mA, CIN=100nF, COUT=1µF)
(Conditions: channel 1 and 2 on, IOUT=30mA,
CIN=100nF, COUT=1µF)
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
14
∆VOUT2 (50mV/Div)
∆VOUT (50mV/Div)
VIN (1V/Div)
6
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
100
∆VOUT (50mV/Div)
6
5
4
∆VOUT2
100
0
∆VOUT1
-50
0
-100
-100
-200
-150
IOUT (50mA/Div)
1.8V/2.5V
(Channel 1/Channel 2)
∆VOUT2 (50mV/Div)
∆VOUT1 (100mV/Div)
VIN (1V/Div)
7
1.8V (Channel 1)
50
0
-50
100
50
0
-50
Time (40µs/Div)
Time (100µs/Div)
Figure 36. Line Transient
Figure 37. Load Transient
(Conditions: channel 1 and 2 on, IOUT=30mA, CIN=COUT=1µF)
(Conditions: IOUT=10 to 100mA, CIN=COUT=1µF)
∆VOUT (50mV/Div)
2.5V (Channel 2)
50
0
-50
IOUT (50mA/Div)
IOUT (50mA/Div)
∆VOUT (50mV/Div)
100
100
50
0
100
2.8V (Channel 2)
50
0
-50
100
50
0
-50
-50
Time (100µs/Div)
Time (100µs/Div)
Figure 38. Load Transient
Figure 39. Load Transient
(Conditions: IOUT=10 to 100mA, CIN=COUT=1µF)
(Conditions: IOUT=10 to 100mA, CIN=COUT=1µF)
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
15
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
∆VOUT1 (20mV/Div)
50
0
-50
IOUT2 (50mA/Div)
∆VOUT (50mV/Div)
IOUT (50mA/Div)
3.3V (Channel 2)
100
50
0
-50
0
-20
300
1.8V/2.5V
(Channel 1/Channel 2)
200
∆VOUT1
100
-40
0
∆VOUT2
∆VOUT2 (100mV/Div)
20
100
100
50
0
-50
Time (100µs/Div)
Time (100µs/Div)
Figure 40. Load Transient
Figure 41. Cross Talk 1
(Conditions: channel 1 and 2 on, IOUT1=30mA,
IOUT2=10 to 100mA, CIN=COUT=1µF)
-100
-200
40
20
0
∆VOUT2
100
50
0
20
0
-20
1.8V/2.8V
(Channel 1/Channel 2)
∆VOUT1
300
200
100
0
-40
∆VOUT2
100
50
0
-50
-50
Time (100µs/Div)
Time (100µs/Div)
Figure 43. Cross Talk 3
(Conditions: channel 1 and 2 on, IOUT1=30mA,
IOUT2=10 to 100mA, CIN=COUT=1µF)
Figure 42. Cross Talk 2
(Conditions: channel 1 and 2 on, IOUT1=10 to 100mA,
IOUT2=30mA, CIN=COUT=1µF)
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
16
∆VOUT2 (100mV/Div)
∆VOUT1
60
∆VOUT1 (20mV/Div)
0
1.8V/2.5V
(Channel 1/Channel 2)
∆VOUT2 (20mV/Div)
100
IOUT2 (50mA/Div)
IOUT2 (50mA/Div)
∆VOUT1 (100mV/Div)
(Conditions: IOUT=10 to 100mA, CIN=COUT=1µF)
Data Sheet
DUAL LDO REGULATORS
AP2401
0
∆VOUT2
100
50
0
0
-20
∆VOUT2
100
50
0
Time (100µs/Div)
∆VOUT2
40
20
0
∆VOUT1 (50mV/Div)
∆VOUT1
60
∆VOUT2 (20mV/Div)
-200
1.8V/3.3V
(Channel 1/Channel 2)
Figure 45. Cross Talk 5
(Conditions: channel 1 and 2 on, IOUT1=30mA,
IOUT2=10 to 100mA, CIN=COUT=1µF)
IOUT1 (100mA/Div)
IOUT1 (50mA/Div)
∆VOUT1 (100mV/Div)
Figure 44. Cross Talk 4
(Conditions: channel 1 and 2 on, IOUT1=10 to 100mA,
IOUT2=30mA, CIN=COUT=1µF)
-100
100
0
-40
Time (100µs/Div)
0
200
-50
-50
100
∆VOUT1
300
∆VOUT2 (100mV/Div)
20
1.8V/3.3V
(Channel 1/Channel 2)
100
50
0
50
0
-50
-100
1.8V/2.5V
(Channel 1/Channel 2)
∆VOUT1
100
50
0
∆VOUT2
100
300
IOUT1
200
0
-100
100
IOUT2
0
-200
-50
150
∆VOUT2 (50mV/Div)
-200
40
20
IOUT2 (100mA/Div)
-100
∆VOUT1
60
∆VOUT1 (20mV/Div)
0
1.8V/2.8V
(Channel 1/Channel 2)
IOUT2 (50mA/Div)
100
∆VOUT2 (20mV/Div)
IOUT1 (50mA/Div) ∆VOUT1 (100mV/Div)
Typical Performance Characteristics (Continued)
Time (100µs/Div)
Time (100µs/Div)
Figure 46. Cross Talk 6
(Conditions: channel 1 and 2 on, IOUT1=10 to 100mA,
IOUT2=30mA, CIN=COUT=1µF)
Figure 47. Cross Talk 7
(Conditions: channel 1 and 2 on, IOUT1=IOUT2=10 to 100mA,
CIN=COUT=1µF)
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
17
Data Sheet
DUAL LDO REGULATORS
AP2401
50
0
-100
∆VOUT2
100
IOUT1
300
200
0
100
-100
IOUT2
0
-200
0
0
∆VOUT2
100
300
IOUT1
0
Figure 48. Cross Talk 8
100
-100
IOUT2
0
-200
VOUT1
3
VOUT2
2
-2
1
-3
0
ESR of Output Capacitor (Ω)
0
VOUT2 (1V/Div)
VCE1/VCE2 (1V/Div)
VOUT1 (1V/Div)
CIN=COUT=1µF)
100
1
-1
Figure 49. Cross Talk 9
(Conditions: channel 1 and 2 on, IOUT1=IOUT2=10 to 100mA,
1.8V/2.8V
(Channel 1/Channel 2)
0
200
Time (100µs/Div)
(Conditions: channel 1 and 2 on, IOUT1=IOUT2=10 to 100mA,
CIN=COUT=1µF)
2
50
-100
Time (100µs/Div)
3
100
∆VOUT1
-50
∆VOUT2 (50mV/Div)
-50
100
150
1.8V/3.3V
(Channel 1/Channel 2)
IOUT2 (100mA/Div)
∆VOUT1
50
∆VOUT1 (50mV/Div)
0
150
IOUT1 (100mA/Div)
1.8V/2.8V
(Channel 1/Channel 2)
∆VOUT2 (50mV/Div)
50
IOUT2 (100mA/Div)
IOUT1 (100mA/Div)
∆VOUT1 (50mV/Div)
Typical Performance Characteristics (Continued)
10
1
Stable Area
0.1
0.01
0
25
50
75
100
125
150
175
200
Output Current (mA)
Time (10µs/Div)
Figure 50. Enable Voltage vs. Output Voltage
(Conditions: VCE1=VCE2=0 to 2V, IOUT=0mA, CIN=COUT=1µF)
Sep. 2007 Rev. 1. 2
Figure 51. ESR vs. Output Current
BCD Semiconductor Manufacturing Limited
18
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Performance Characteristics (Continued)
100
100
1.8V (Channel 1)
VIN=2.8V
80
IOUT=30mA
70
COUT=1µF
60
50
40
80
IOUT=30mA
70
COUT=1µF
60
50
40
30
30
20
20
10
10
0
10
100
1k
10k
2.5V (Channel 2)
VIN=3.5V
90
PSRR (dB)
PSRR (dB)
90
0
10
100k
100
Figure 52. PSRR vs. Frequency
100k
100
2.8V (Channel 2)
VIN=3.8V
90
80
IOUT=30mA
70
COUT=1µF
60
50
40
80
IOUT=30mA
70
COUT=1µF
60
50
40
30
30
20
20
10
10
100
1k
10k
3.3V (Channel 2)
VIN=4.3V
90
PSRR (dB)
PSRR (dB)
10k
Figure 53. PSRR vs. Frequency
100
0
10
1k
Frequency (Hz)
Frequency (Hz)
0
10
100k
100
1k
10k
100k
Frequency (Hz)
Frequency (Hz)
Figure 54. PSRR vs. Frequency
Figure 55. PSRR vs. Frequency
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
19
Data Sheet
DUAL LDO REGULATORS
AP2401
Typical Application
AP2401B12
CE1
VOUT1
VIN =3.5V
VIN
VOUT1=1.8V
VOUT1
COUT1
VIN
GND
CE2
VOUT2
1µF
CIN
1µF
VOUT 2 =2.5V
VOUT2
COUT2
1µF
Figure 56. Typical Application of AP2401
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
20
Data Sheet
DUAL LDO REGULATORS
AP2401
Mechanical Dimensions
SOT-23-6
Unit: mm(inch)
0°
2.820(0.111)
8°
3.020(0.119)
0.300(0.012)
0.400(0.016)
5
0.300(0.012)
0.600(0.024)
4
1.500(0.059)
1.700(0.067)
2.650(0.104)
2.950(0.116)
6
0.200(0.008)
Pin 1 Dot by Marking
1
2
3
0.700(0.028)REF
0.950(0.037)TYP
0.000(0.000)
0.100(0.004)
1.800(0.071)
2.000(0.079)
0.100(0.004)
0.200(0.008)
1.050(0.041) 1.050(0.041)
1.150(0.045) 1.250(0.049)
Sep. 2007 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
21
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
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