Infineon IFX21401MB Low dropout voltage tracking regulator Datasheet

IFX21401
Low Dropout Voltage Tracking Regulator
IFX21401MB
Data Sheet
Rev. 1.01, 2009-10-19
Standard Power
Low Dropout Voltage Tracking Regulator
1
IFX21401
Overview
Features
•
•
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•
•
•
•
•
•
•
•
•
•
50 mA Output Current Capability
Tiny and Thermally Enhanced-Package
Accurate Output Voltage Tracking
Stable with Small Output Capacitor
Low Dropout Voltage, 300mV
Combined Reference / Enable Input
Low Current Consumption in Stand-by Mode
Maximum Input Voltage -42 V ≤ VI ≤ +45 V
Reverse Polarity Protection
Output Short Circuit to Ground and Supply Protection
Overtemperature Protection
Temperature Range -40 °C ≤ Tj ≤ 125 °C
Green Product (RoHS compliant)
PG-SCT595-5
Applications
•
•
•
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Manufacturing Automation
Appliances
HDTV Televisions
Game Consoles
Network Routers
For automotive and transportation applications, please refer to the Infineon TLE and TLF voltage regulator series.
Functional Description
The IFX21401 is a monolithic integrated low dropout voltage tracker in a tiny SMD package PG-SCT595-5 with
excellent thermal resistance. It is designed to supply off-board loads (e.g. sensors) in harsh environments. The IC
protects itself in case of overload, overtemperature, reverse polarity as well as output short circuit to battery or
ground.
Supply voltages up to VI = 45 V are regulated to a reference voltage applied at the adjust input “ADJ” with high
accuracy. The output “Q” is able to drive loads up to 50 mA.
In order to reduce the quiescent current to a minimum, the IFX21401 can be switched to stand-by mode by setting
the adjust/enable input “ADJ/EN” to “low”.
Type
Package
Marking
IFX21401MB
PG-SCT595-5
T1
Data Sheet
2
Rev. 1.01, 2009-10-19
IFX21401
Block Diagram
2
Block Diagram
Supply
IFX21401MB
I
CI
ADJ/EN
Internal
Supply
Saturation Control
Current Limitation
Q
Regulated
Output Voltage
Temp.
Protection
CQ
Voltage
divider
optional
Reference
off-board
load
ADJ/EN
GND
BlockDiagram. vsd
Figure 1
Block Diagram and Typical Application Circuit
3
Pin Configuration
3.1
Pin Assignment
ADJ/EN
1
GND
2
I
3
5
GND
4
Q
Pi no ut.v s d
Figure 2
Pin Configuration Package PG-SCT595-5
3.2
Pin Definitions and Functions
Pin
Symbol
Function
1
ADJ/EN
Adjust / Enable.
Connect the reference to this pin. A low signal disables the IC; a high signal switches it on.
The reference voltage can be connected directly or by a voltage divider for lower output voltages.
For compensating line influences, a capacitor close to the IC pins is recommended.
2
GND
Ground Reference.
Internally connected to Pin 5. Connect to heatsink area.
3
I
Input.
IC supply. For compensating line influences, a capacitor close to the IC pins is recommended.
4
Q
Tracker Output.
Block to GND with a capacitor close to the IC terminals, respecting capacitance and ESR
requirements given in the table “Functional Range”.
5
GND
Ground Reference.
Internally connected to Pin 2. Connect to heatsink area.
Data Sheet
3
Rev. 1.01, 2009-10-19
IFX21401
General Product Characteristics
4
General Product Characteristics
4.1
Absolute Maximum Ratings
Absolute Maximum Ratings 1)
-40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified).
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Max.
VI
VQ
VADJ/EN
-42
45
V
–
-1
40
V
–
-0.3
40
V
–
Tj
Tstg
-40
150
°C
–
-50
150
°C
–
VESD,HBM
VESD,CDM
-3
3
kV
HBM2)
-2
2
kV
CDM3)
Voltages
4.1.1
Input voltage
4.1.2
Output voltage
4.1.3
Adjust / Enable Input
Temperatures
4.1.4
Junction Temperature
4.1.5
Storage Temperature
ESD Susceptibility
4.1.6
ESD Resistivity
4.1.7
1) Not subject to production test, specified by design.
2) ESD susceptibility, Human Body Model “HBM” according to EIA/JESD 22-A114B
3) ESD susceptibility, Charged Device Model “CDM” according to EIA/JESD22-C101 or ESDA STM5.3.1
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Data Sheet
4
Rev. 1.01, 2009-10-19
IFX21401
General Product Characteristics
4.2
Pos.
Functional Range
Parameter
Symbol
4.2.1
Input Voltage
4.2.1
Adjust / Enable Input Voltage
(Voltage Tracking Range)
4.2.2
Junction Temperature
4.2.3
Output Capacitor Requirements
4.2.4
Limit Values
Unit
Conditions
Min.
Max.
VI
VADJ/EN
4
40
V
–
2.5
36
V
–
Tj
CQ
ESRCQ
-40
125
°C
–
1
–
µF
– 1)
–
3
Ω
– 2)
1) The minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30%
2) relevant ESR value at f = 10 kHz
Note: Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
4.3
Thermal Resistance
Pos.
Parameter
Symbol
4.3.5
Junction to Ambient
RthJA
Limit Value
Unit
Conditions
Min.
Typ.
Max.
–
81
–
K/W
2s2p board1)
4.3.1
–
217
–
K/W
Footprint only2)
4.3.2
–
117
–
K/W
300 mm2 PCB heatsink
area2)
4.3.3
–
103
–
K/W
600 mm2 PCB heatsink
area2)
–
30
–
K/W
Pins 2, 5 fixed to TA
4.3.4
Junction to Soldering Point
RthJSP
1) Specified RthJA value is according to JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The product
(chip+package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu).
Where applicable a thermal via array under the package contacted the first inner copper layer.
2) Package mounted on PCB FR4; 80 x 80 x 1.5 mm; 35 µm Cu, 5 µm Sn; horizontal position; zero airflow.
Not subject to production test; specified by design.
Data Sheet
5
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
5
Electrical Characteristics
5.1
Tracking Regulator
The output voltage VQ is controlled by comparing it to the voltage applied at pin ADJ/EN and driving a PNP pass
transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current, the chip
temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the output
capacitor’s capacitance and its equivalent series resistor ESR requirements given in the table “Functional Range”
have to be maintained. For details see also the typical performance graph “Output Capacitor Series Resistor
ESRCQ vs. Output Current IQ”. Also, the output capacitor shall be sized to buffer load transients.
An input capacitor CI is recommended to buffer line influences. Connect the capacitors close to the IC terminals.
Protection circuitry prevent the IC as well as the application from destruction in case of catastrophic events. These
safeguards contain output current limitation, reverse polarity protection as well as thermal shutdown in case of
overtemperature.
In order to avoid excessive power dissipation beyond the capability of the pass element and the package, the
maximum output current is decreased at high input voltages.
The overtemperature protection circuit prevents the IC from immediate destruction under fault conditions (e. g.
output continuously short-circuited) by reducing the output current. Please note that a junction temperature above
150 °C is outside the maximum ratings and reduces the IC lifetime.
The IFX21401 is protected from a reverse (i.e. negative polarity) input voltage. During reverse input voltage there
is a small of current flowing into the IC and thermal shutdown protection is not operating. For reverse current
details refer to the electrical characteristics table and typical performance graphs.
Table 1
Electrical Characteristics Tracking Regulator
VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C; all voltages with respect to ground (unless otherwise specified).
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
-5
–
5
mV
1 mA ≤ IQ ≤ 10 mA;
6 V ≤ VI ≤ 16 V
5.1.2
-25
–
25
mV
1 mA ≤ IQ ≤ 50 mA;
6 V ≤ VI ≤ 28 V
5.1.3
-25
–
25
mV
1 mA ≤ IQ ≤ 10 mA;
6 V ≤ VI ≤ 40V
5.1.1
Output Voltage Tracking
Accuracy
Δ VQ
5.1.4
Load Regulation
steady-state
|dVQ,load|
–
–
15
mV
IQ = 1 mA to 30 mA;
5.1.5
Line Regulation
steady-state
|dVQ,line|
–
–
10
mV
5.1.6
Power Supply Ripple
Rejection
PSRR
–
48
–
dB
5.1.7
Dropout Voltage
Vdr = VI - VQ
Vdr
–
100
300
mV
5.1.8
Output Current Limitation
IQ,max
51
85
120
mA
VI = 6 V to 40 V;
IQ = 10 mA
fripple = 100 Hz;
Vripple = 1 Vpp 1)
IQ = 10 mA
VADJ ≥ 4 V 2)
VQ = (VADJ - 0.1 V)
Data Sheet
6
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
Table 1
Electrical Characteristics Tracking Regulator
VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C; all voltages with respect to ground (unless otherwise specified).
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
VI = 0 V;
VQ = 16 V;
VADJ = 5 V
VI = -16 V;
VQ = 0 V;
VADJ = 5 V
Reverse Current
IQ
-5
-1
–
mA
5.1.10 Reverse Current
at Negative Input Voltage
II
-10
-2
–
mA
Tj,eq
151
–
200
°C
5.1.9
Overtemperature Protection:
5.1.11 Junction Temperature
Equilibrium
Tj increasing due to power
dissipation generated
by the IC 1)
1) Parameter not subject to production test; specified by design.
2) Measured when the output voltage VQ has dropped 100 mV from its nominal value.
Data Sheet
7
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
Typical Performance Characteristics Tracking Regulator
VADJ/EN = 5 V (unless otherwise noted)
Output Voltage VQ vs.
Adjust Voltage VADJ
Output Voltage VQ vs.
Input Voltage VI
VQ-VADJ.vsd
V Q [V]
VQ-VI.vsd
VI = 13.5 V
V Q [V]
4
4
3
3
2
VI = 13.5 V
Vdr
2
T j = 150 °C
T j = -40 °C
Tj = -40 °C
1
1
T j = 150 °C
1
2
3
4
1
5
3
7
VADJ [V]
Maximum Output Current IQ vs.
Input Voltage VI
120
IQ [mA]
VI [V]
Line Regulation dVQ,line vs.
Input Voltage Change dVI)
SOA.VSD
dVQ-dVI.vsd
Δ VQ [mV]
VADJ = 5 V
Tj = 25 °C
80
VI,initial = 6 V
VADJ = 5 V
IQ = 5 mA
0.3
Tj = 125 °C
60
0.2
40
0.1
20
0
steady-state condition
0
10
20
30
40
0
VI [V]
Data Sheet
5
10
15
20 25
30
35
40
ΔVI [V]
8
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
Typical Performance Characteristics Tracking Regulator
VADJ/EN = 5 V (unless otherwise noted)
Load Regulation dVQ,line vs.
Output Current Change dIQ
Output Capacitor Series Resistor ESRCQ
vs. Output Current IQ
dVQ-dIQ.vsd
Δ VQ [mV]
ESR-IQ.vsd
10
ESR CQ
IQ,initial = 1 mA
VADJ = 5 V
[Ω]
C Q = 2.2 µF
-2
C Q = 1 µF
1
T j = 25 °C
-4
Stable
Region
Tj = 125 °C
-6
0.1
-8
VI < 28 V
-40 °C < T j < 150 °C
steady-state condition
0
24
12
36
0.01
48
0
20
10
30
Line Transient Response
50
40
ΔΙQ [mA]
IQ [mA]
Load Transient Response
dIQresponse.vsd
dVI-reponse.vsd
Δ VQ
Δ VQ
[mV]
[mV]
0
0
-20
-50
-40
I Q = 5 mA
C Q = 2.2 µF Ceramic
VI
VI = 13.5 V
VADJ = 5 V
C Q = 2.2 µF Ceramic
ΙQ
[V]
[mA]
16
30
9
5
0
20
40
60
0
80
40
60
80
t [µs]
t [µs]
Data Sheet
20
9
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
Typical Performance Characteristics Tracking Regulator
VADJ/EN = 5 V (unless otherwise noted)
Tracking Accuracy ΔVQ vs.
Junction Temperature Tj
Dropout Voltage Vdr vs.
Output Current IQ
dVQ-Tj.vsd
ΔVQ
Vdr-IQ_log.vsd
V dr [mV]
[mV]
T j = 150 °C
8
IQ = 50 mA
T j = 25 °C
4
100
0
IQ = 1 mA
-4
-40 -20
0
20
40
10
60 80 100 120 140
1
10
50
T j [°C]
Dropout Voltage Vdr vs.
Junction Temperature Tj
I Q [mA]
Output Current Limitation IQ,max
vs. Output Voltage VQ
IQmax-VQ.vsd
Vdr-Tj.vsd
VI = 13.5 V
VADJ = 5 V
V dr [mV]
5
VQ [V]
250
3
200
Tj = 125°C
IQ = 10 mA
150
2
1
100
-40 -20
0
20
40
60
0
20
80 100 120 140
40
60
80
100
IQ [mA]
T j [°C]
Data Sheet
Tj = 25°C
10
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
Typical Performance Characteristics Tracking Regulator
VADJ/EN = 5 V (unless otherwise noted)
Reverse Output Current IQ vs.
Output Voltage VQ
Reverse Current II vs.
Input Voltage VI
+0.5
+0.5
IQ-VQ.vsd
I Q [mA]
II-VI.vsd
I I [mA]
VI = 0 V
V ADJ = 5 V
-0.5
-0.5
-1
-1
VQ = 0 V
VADJ = 5 V
T j = -40 °C
T j = -40 °C
-1.5
T j = 150 °C
-1.5
T j = 150 °C
-2
-2
0
8
16
24
-32
32
VQ [V]
-24
-16
-8
0
VI [V]
Power Supply
Ripple Rejection PSRR
PSRR.vsd
60
PSRR
[dB]
IQ = 5 mA
40
30
20
10
0.01
VRIPPLE = 1 V
VIN = 13.5 V
C Q = 2.2 µF Ceramic
T j = 25 °C
0.1
1
10
100
f [kHz]
Data Sheet
11
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
5.2
Current Consumption
Table 2
Electrical Characteristics Current Consumption
VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C; all voltages with respect to ground (unless otherwise specified).
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
VADJ/EN ≤ 0.4 V;
Tj ≤ 85 °C
IQ ≤ 1 mA;
IQ ≤ 30 mA;
VADJ = VI = 5 V;
IQ = 0 mA
5.2.1
Quiescent Current
Stand-by Mode
Iq1
–
10
20
µA
5.2.2
Current Consumption
Iq = II - IQ
Iq2
–
140
200
µA
–
3
5
mA
Current Consumption
Dropout Region; Iq = II - IQ
Iq3
–
1
2
mA
5.2.3
5.2.4
Typical Performance Characteristics Current Consumption
VADJ/EN = 5 V (unless otherwise noted)
Current Consumption Iq1, Iq2
vs. Junction Temperature Tj
Current Consumption Iq2 vs.
Output Current IQ
Iq-IQ.vsd
Iq-Tj.vsd
I q2 [mA]
1
I q [mA]
I Q = 30 mA
V EN/ADJ = 5 V
VI = 9 V
VI = 13.5 V
VI = 13.5V
VEN/ADJ = 5 V
VI = 32 V
IQ = 1 mA
1
0.1
Iq1 [µA]
16
VI = 32 V
V I = 13.5V
V EN/ADJ = 0 V
12
-40 -20
0
20 40
60
0.1
80 100 120 140
Tj [°C]
Data Sheet
1
50
10
IQ [mA]
12
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
Current Consumption Iq2 vs.
Input Voltage VI
Iq-VI.vsd
12
VADJ = 5 V
I q [mA]
IQ = 50 mA
8
6
4
IQ = 30 mA
2
IQ = 10 mA
6
10
14
18
22 24
VI [V]
Data Sheet
13
Rev. 1.01, 2009-10-19
IFX21401
Electrical Characteristics
5.3
Adjust / Enable Input
In order to reduce the quiescent current to a minimum, the IFX21401MB can be switched to stand-by mode by
setting the adjust/enable input “ADJ/EN” to “low”.
Table 3
Electrical Characteristics Adjust / Enable
VI = 13.5 V; VADJ ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C;
all voltages with respect to ground, positive current flowing into pin (unless otherwise specified).
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
5.3.1
Adjust / Enable
Input Current
IADJ
–
0.1
0.5
µA
VADJ = 5 V;
5.3.2
Adjust / Enable
Low Signal Valid
VADJ,low
–
–
0.4
V
VQ = 0 V;
5.3.3
Adjust / Enable
High Signal Valid
(Tracking Region)
VADJ,high
2.5
–
36
V
|VQ - VADJ| < 25 mV;
Typical Performance Characteristics Adjust / Enable Input
VADJ/EN = 5V (unless otherwise noted)
Startup Sequence
4250-2_startup.vsd
V [V]
Overshoot depends on
load current, CQ , ESR CQ
4
VADJ
3
2
dVQ / dt =
(IQ,max-I Load ) / C Q
1
0
20 40
60
80 100 120 140
t [µs]
Data Sheet
14
Rev. 1.01, 2009-10-19
IFX21401
Package Outlines
6
Package Outlines
2.9 ±0.2
(2.2)
B
1.2 +0.1
-0.05
1.1 MAX.
(0.3)
1
2
+0.2
acc. to DIN 6784
3
0.3 +0.1
-0.05
0.15 +0.1
-0.06
+0.1
0.6 -0.05
0.2
0.95
M
1.6 ±0.1
4
10˚ MAX.
(0.23) 1)
(0.13)
5
0.25 ±0.1
10˚ MAX.
0.1 MAX.
2.5 ±0.1
(0.4)
1)
A
A
1.9
1) Contour of slot depends on profile
of gull-wing lead form
0.25 M B
GPW05997
2.3
1.3
2.9
1.9
2.3
1.3
1.45
1.3 MIN.
Outline PG-SCT595-5
1.6
Figure 3
0.4
0.75
0.4
0.95
0.75
HLG09053
0.95
HLG09090
Reflow Soldering
Figure 4
Wave Soldering
Footprint PG-SCT595-5
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant with
government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e
Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further information on packages, please visit our website:
http://www.infineon.com/packages
Data Sheet
15
Dimensions in mm
Rev. 1.01, 2009-10-19
IFX21401
Revision History
7
Revision History
Revision
Date
Changes
1.01
2009-10-19
Coverpage changed
Overview page: Inserted reference statement to TLE/TLF series.
1.0
2009-04-28
Initial Release
Data Sheet
16
Rev. 1.01, 2009-10-19
Edition 2009-10-19
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2009 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
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characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
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Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
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