BCD AP2160 Ultra low output voltage linear n-fet controller Datasheet

Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
General Description
Features
The AP2160 is an ultra low output voltage N-FET
linear regulator controller. The output voltage can be
adjusted down to 0.5V. A Power-On-Reset (POR)
circuit monitors supply voltage to prevent wrong
operations. A POK pin indicates the output status. It
can control other converters for power sequence. The
AP2160 can be enabled by other power systems.
•
•
•
•
•
•
•
The AP2160 integrates a 0.5V reference voltage with
1% accuracy to provide tight regulation to the output
voltage. The regulator also features enable control,
open drain power good signal, under-voltage
protection and soft start.
•
The AP2160 is available in 6-pin SOT-23-6 standard
package.
AP2160
0.5V Reference Voltage with 1% Accuracy
Adjustable Output Voltage down to 0.5V
Low ESR Output Capacitor (MLCC and
POSCAP) Applicable
Enable Control for the Output Voltage and Low
Shutdown Current
Under-voltage Short Circuit Protection
Fast Transient Response
Power Good Monitoring and Signaling for the
Output
Drive N-Channel MOSFETs
Applications
•
•
•
•
Notebook PC Computers
Desktop Computers
Battery Powered Devices
Portable Instruments
SOT-23-6
Figure 1. Package Type of AP2160
Jan. 2012
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
1
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
AP2160
Pin Configuration
K Package
(SOT-23-6)
Pin 1 Mark
VCC
1
6
DRV
GND
2
5
FB
POK
3
4
EN
Figure 2. Pin Configuration of AP2160 (Top View)
Pin Description
Pin Number
Pin Name
1
VCC
Input voltage
2
GND
Common ground pin
3
POK
Power OK output pin
4
EN
H: Normal operation;
5
FB
Output voltage feedback pin
6
DRV
Jan. 2012
Function
L: Shutdown
Gate drive to N-FET
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
2
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
AP2160
Functional Block Diagram
POK
1
Power On Reset
6
Thermal
Protection
Band Gap
VCC
3
5
DRV
FB
Control Logic Unit
GND
2
Enable Control
4
EN
Figure 3. Functional Block Diagram of AP2160
Ordering Information
AP2160
-
Circuit Type
G1: Green
Package
K: SOT-23-6
TR: Tape & Reel
Package
Temperature
Range
SOT-23-6
-40 to 85°C
Part Number
AP2160KTR-G1
Marking ID
GJC
Packing
Type
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Jan. 2012
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
3
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
AP2160
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
VCC to GND
VCC
-0.3 to 7
V
DRV to GND
VDRV
-0.3 to VCC+0.3
V
POK to GND
VPOK
-0.3 to VCC+0.3
V
FB to GND
VFB
-0.3 to VCC+0.3
V
EN to GND
VEN
-0.3 to VCC+0.3
V
Operating Junction Temperature
TJ
150
ºC
Power Dissipation (25ºC)
PD
0.4
W
Operating Temperature Range
TOPR
-40 to 85
ºC
Storage Temperature Range
TSTG
-65 to 150
ºC
TLEAD
260
ºC
ESD (Machine Model)
200
V
ESD (Human Body Model)
2000
V
Lead Temperature
Seconds)
(Soldering,
10
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
Min
Max
Unit
Supply Voltage (between VCC and GND)
VCC
4.5
5.5
V
System Input Voltage (between VIN and GND)
VIN
0.5
5.5
V
Ambient Operating Temperature Range
TA
-40
85
°C
Jan. 2012
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
4
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
AP2160
Electrical Characteristics
VIN =1.5V, VOUT=1.05V, VEN=VCC, TA=25°C, CIN=4.7µF, COUT=22µF, unless otherwise specified.
Parameter
Symbol
Supply Voltage Range
Input Voltage
Threshold
Input Voltage
Hysteresis
UVLO
UVLO
Conditions
VCC
Min
4.5
VHYST
VFB=0.48V, VCC falling
0.25
V
0.42
ISD
VEN=0V
Feedback Voltage
VFB
VEN=VCC=5V
0.495
IFB
VFB=0.5V
-100
VEN-H
VCC=5V, VEN rising
1.3
VEN-L
VCC=5V, VEN falling
IEN
IOUT=0mA, VIN=5V
High
EN Pin Input Current
Output Voltage
Threshold
UVLO
DRV Output Current
DRV Pin Output Voltage
POK Threshold Voltage
for Power not OK
Thermal
Temperature
Thermal
Hysteresis
Jan. 2012
Shutdown
-1
0.5
-1
IDRV(SS)
Sourcing, VFB=0V
20
IDRV(SRC)
Sourcing, VFB=0.48V
2.2
IDRV(SINK)
Sinking, VFB=0.52V
9.0
VDRV
VPNOK
VFB falling
0.2
Shutdown
Rev. 1. 0
0.25
4.9
µΑ
0.505
V
100
nA
1
µΑ
0.3
V
µΑ
5.0
V
0.8
1.15
1.5
84%
88%
91%
VFB
200
250
mV
2
10
ms
0.8
TSD
1
mA
POK sinks 1mA
tDELAY
mA
V
VFB Falling
VFB=0.48V,
VEN=VCC=5V
VFB=0.52V,
VEN=VCC=5V
0.6
0.5
VTH(UV)
POK Low Voltage
POK Delay Time
V
V
Shutdown Current
EN Pin Logic
Threshold Voltage
5.5
3.70
VEN=VCC=5V
Input
Units
VFB=0.48V, VCC rising
ICC
Pin
Max
VUVLO
Supply Current
Feedback
Current
Typ
150
°C
40
°C
BCD Semiconductor Manufacturing Limited
5
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
AP2160
Typical Performance Characteristics
500
0.504
0.502
460
Supply Current (µA)
Feedback Voltage (V)
480
0.500
0.498
440
420
400
0.496
380
-40
-20
0
20
40
60
80
100
120
-40
-20
o
0
20
40
60
80
100
120
o
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 4. Feedback Voltage vs. Ambient Temperature
Figure 5. Supply Current vs. Ambient Temperature
70
1.0600
60
1.0595
Ripple Rejection (dB)
Output Voltage (V)
50
1.0590
1.0585
1.0580
40
Output Voltage: 1.05V
Load Current: 300mA
30
20
10
0
0.0
0.5
1.0
1.5
2.0
2.5
100
3.0
Figure 6. Output Voltage vs. Load Current
Jan. 2012
1000
10000
100000
Frequence (Hz)
Load Current (A)
Figure 7. Ripple Rejection vs. Frequency
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
6
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
Function Description
AP2160
provides very fast transient response and excellent
load regulation.
1. Power-On-Reset
3. Under-Voltage Protection (UVP)
A Power-On-Reset (POR) circuit monitors input
voltages at VCC pin to prevent wrong logic controls.
The POR function initiates a soft-start process after
the supply voltages exceed input voltage UVLO
threshold during powering on. The POR function also
pulls low the POK pin regardless of the output
voltage when the VCC voltage falls below the input
voltage UVLO threshold minus input voltage UVLO
hysteresis.
AP2160 monitors the voltage on FB pin after
soft-start process finishing. Therefore the UVP is
disabled during soft-start. When the voltage on FB
pin falls below the output voltage UVLO Threshold,
the UVP circuit shuts down the output immediately.
4. Thermal Shutdown
A thermal shutdown circuit limits the junction
temperature of AP2160. When the junction
temperature exceeds 150°C, a thermal sensor turns
off the output NMOS, allowing the device to cool
down. The regulator regulates the output again
through initiation of a new soft-start cycle after the
junction temperature drops by 40°C.
2. Output Voltage Regulation
An error amplifier working with a temperature
compensated 0.5V reference and an output NMOS
regulates output to the preset voltage. The error
amplifier designed with high bandwidth and DC gain
Jan. 2012
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
7
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
AP2160
Typical Application
Figure 8. Typical Application Circuit of AP2160
Jan. 2012
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
8
Preliminary Datasheet
Ultra Low Output Voltage Linear N-FET Controller
AP2160
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
4
2
3
0.300(0.012)
0.600(0.024)
1.500(0.059)
1.700(0.067)
2.650(0.104)
2.950(0.116)
6
0.200(0.008)
Pin 1 Mark
1
0.700(0.028)REF
0.950(0.037)TYP
0.000(0.000)
0.150(0.006)
1.800(0.071)
2.000(0.079)
0.100(0.004)
0.200(0.008)
0.900(0.035) 1.450(0.057)
MAX
1.300(0.051)
Jan. 2012
Rev. 1. 0
BCD Semiconductor Manufacturing Limited
9
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