ST2L05-2825K5 [STMICROELECTRONICS]
DUAL OUTPUT, FIXED POSITIVE REGULATOR, PSSO5, SPAK-5;
| 型号： | ST2L05-2825K5 |
| 厂家： | 
ST |
| 描述： | DUAL OUTPUT, FIXED POSITIVE REGULATOR, PSSO5, SPAK-5 输出元件 调节器 |
| 文件： | 总23页 (文件大小：684K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ST2L05
VERY LOW QUIESCENT CURRENT
DUAL VOLTAGE REGULATOR
■
■
V
V
= 1.5, 1.8, 2.5, 2.8, 3.0, 3.3V FIXED
= 1.5, 1.8, 2.5, 2.8, 3.0, 3.3V FIXED OR
O1
O2
ADJUSTABLE FROM 1.25 TO V - V
I
DROP
■
■
■
■
■
■
■
GUARANTEED OUTPUT1 CURRENT: 1A
GUARANTEED OUTPUT2 CURRENT: 1A
± 2% OUTPUT TOLERANCE (AT 25°C)
± 3% OUTPUT TOLERANCE OVER TEMP.
SPAK-5L
DFN
TYPICAL DROPOUT 1.1V (I = I = 1A)
O1
O2
INTERNAL POWER AND THERMAL LIMIT
STABLE WITH LOW ESR OUTPUT
CAPACITOR
OPERATING TEMPERATURE RANGE:
0°C TO 125°C
VERY LOW QUIESCENT CURRENT: 7mA
MAX OVER TEMP.
mounting package named DFN 5x6mm at 8 pins.
The first regulator block supplies 1.5V, 1.8V, 2.5V,
2.8V, 3.0V, 3.3V depending on the chosen
version. The second one may be fixed to the same
values or adjustable from 1.25V to V - V
could power several
micro-controllers. Both outputs are current limited
and over temperature protected. It is worth
underlining the very good thermal performance of
the packages SPAK and DFN with only 2°C/W of
■
■
■
that
different
I
DROP
AVAILABLE IN SPAK AND IN DFN 5x6mm
PACKAGE
kind of
DESCRIPTION
Specifically designed
applications, this device integrates two voltage
regulators, each one able to supply 1A and it is
assembled in SPAK and in a new 8-PIN surface
for
data
storage
Thermal
Resistance
Junction
to
Case.
Applications are HARD DISK, CD/DVD-ROM, CD/
DVD-R/RW, COMBO (DVD-ROM+CD-R/RW).
Figure 1: Block Diagram Of Fixed/adj Version
Rev. 6
1/23
December 2004
ST2L05
Figure 2: Block Diagram Of Fixed/fixed Version
2/23
ST2L05
Table 1: Order Codes
(1)
V
V
O2
SPAK
DFN
SHIPMENT
O1
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.5 V
1.8 V
1.8 V
1.8 V
1.8 V
1.8 V
1.8 V
1.8 V
2.5 V
2.5 V
2.5 V
2.5 V
2.5 V
2.5 V
2.5 V
2.8 V
2.8 V
2.8 V
2.8 V
2.8 V
2.8 V
2.8 V
3.0 V
3.0 V
3.0 V
3.0 V
3.0 V
3.0 V
3.0 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
3.3 V
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
ADJ
ST2L05R1515K5 (*)
ST2L05R1518K5 (*)
ST2L05R1525K5 (*)
ST2L05R1528K5 (*)
ST2L05R1530K5 (*)
ST2L05R1533K5 (*)
ST2L05R1500K5 (*)
ST2L05R1815K5 (*)
ST2L05R1818K5 (*)
ST2L05R1825K5 (*)
ST2L05R1828K5 (*)
ST2L05R1830K5 (*)
ST2L05R1833K5 (*)
ST2L05R1800K5 (*)
ST2L05R2515K5 (*)
ST2L05R2518K5 (*)
ST2L05R2525K5 (*)
ST2L05R2528K5 (*)
ST2L05R2530K5 (*)
ST2L05R2533K5 (*)
ST2L05R2500K5 (*)
ST2L05R2815K5 (*)
ST2L05R2818K5 (*)
ST2L05R2825K5 (*)
ST2L05R2828K5 (*)
ST2L05R2830K5 (*)
ST2L05R2833K5 (*)
ST2L05R2800K5 (*)
ST2L05R3015K5 (*)
ST2L05R3018K5 (*)
ST2L05R3025K5 (*)
ST2L05R3028K5 (*)
ST2L05R3030K5 (*)
ST2L05R3033K5 (*)
ST2L05R3000K5 (*)
ST2L05R3315K5 (*)
ST2L05R3318K5 (*)
ST2L05R3325K5 (*)
ST2L05R3328K5 (*)
ST2L05R3330K5 (*)
ST2L05R3333K5 (*)
ST2L05R3300K5
ST2L05R1515PS (*)
ST2L05R1518PS (*)
ST2L05R1525PS (*)
ST2L05R1528PS (*)
ST2L05R1530PS (*)
ST2L05R1533PS (*)
ST2L05R1500PS (*)
ST2L05R1815PS (*)
ST2L05R1818PS (*)
ST2L05R1825PS (*)
ST2L05R1828PS (*)
ST2L05R1830PS (*)
ST2L05R1833PS (*)
ST2L05R1800PS (*)
ST2L05R2515PS (*)
ST2L05R2518PS (*)
ST2L05R2525PS (*)
ST2L05R2528PS (*)
ST2L05R2530PS (*)
ST2L05R2533PS (*)
ST2L05R2500PS (*)
ST2L05R2815PS (*)
ST2L05R2818PS (*)
ST2L05R2825PS (*)
ST2L05R2828PS (*)
ST2L05R2830PS (*)
ST2L05R2833PS (*)
ST2L05R2800PS (*)
ST2L05R3015PS (*)
ST2L05R3018PS (*)
ST2L05R3025PS (*)
ST2L05R3028PS (*)
ST2L05R3030PS (*)
ST2L05R3033PS (*)
ST2L05R3000PS (*)
ST2L05R3315PS (*)
ST2L05R3318PS (*)
ST2L05R3325PS
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
ADJ
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
ADJ
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
ADJ
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
ADJ
1.5 V
1.8 V
2.5 V
2.8 V
3.0 V
3.3 V
ADJ
ST2L05R3328PS (*)
ST2L05R3330PS (*)
ST2L05R3333PS (*)
ST2L05R3300PS
(*) Available on request.
(1) For Tube Shipment, change "R" with "-" in the relevant ordering code, DFN is available only in Tape & Reel.
3/23
ST2L05
Table 2: Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
V
Operating Input Voltage
10
V
I
P
Power Dissipation
Internally Limited
Internally Limited
0 to 150
D
I
Short Circuit Output Current - 3.3 V and adjustable output
Operating Junction Temperature Range
OSH
T
°C
°C
°C
op
(*)
T
-65 to 150
260
Storage Temperature Range
stg
T
Lead Temperature (Soldering) 10 Sec.
LEAD
(*) Storage temperatures > 125°C are only acceptable if the Dual Regulator is soldered to a PCBA.
Absolute Maximum Ratings are those beyond which damage to the device may occur. Functional operation under these condition is not im-
plied.
Table 3: Recommended Operating Conditions
Symbol
Parameter
Value
Unit
V
Input Voltage
4.5 to 7
± 0.15
≥ 1
V
I
∆V
Input Voltage Ripple
V
I
t
Input Voltage Rise Time (from 10% to 90%)
Input Voltage Fall Time (from 10% to 90%)
µsec
µsec
RISE
t
≥ 1
FALL
Table 4: Thermal Data
Symbol
Parameter
SPAK
DFN
Unit
R
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
2
2
°C/W
°C/W
thj-case
R
26
36
thj-amb
Figure 3: Pin Connection (top view for SPAK, top through view for DFN8)
SPAK
DFN8
Table 5: Pin Description
SPAK
DFN
Symbol
Name and Function
1
3
V
Bypass with a 4.7µF capacitor to GND
I
2
3
4
4
8
5
ADJ/N.C.
GND
Resistor divider connection/Not Connected
Ground
V
V
Adjustable output voltage: bypass with a 4.7µF capacitor to GND
Fixed output voltage: bypass with a 4.7µF capacitor to GND
Not Connected
O2
O1
5
7
1, 2, 6
NC
4/23
ST2L05
Figure 4: Application Circuit Of Fixed/fixed Version
Figure 5: Application Circuit Of Fixed/adj Version
NOTE: The regulator is designed to be stable with either tantalum or ceramic capacitors on the input and outputs. The expected values of
the input and output X7R ceramic capacitors are from 4.7µF to 22µF with 4.7µF typical. The input capacitor must be connected within 0.5
inches of the V terminal. The output capacitors must also be connected within 0.5 inches of output pins V and V . There is no upper limit
I
O1
O2
to the size of the input capacitor (for more details see the Application Hints section).
NOTE: In the Fixed/ADJ version, the adjustable output voltage V is designed to support output voltages from 1.25V to V - V . The
DROP
O2
I
adjustable output voltage V is set by a resistor divider connected between V (pin4) and Ground (pin3) with its centre tap connected to
O2
O2
V
ADJ (pin2). The voltage divider resistors are: R connected to V and V ADJ and R connected to V ADJ and GND. V is deter-
1 O2 O2 2 O2 O2
O2
mined by V
, R , R , and I
as follows (for more details see the Application Hints section):
ADJ
REF
1
2
V
= V
(1+R /R ) + I
R
ADJ 1
O2
REF
1
2
5/23
ST2L05
Table 6: Output1 And Output2 Dual Specification (I = 10mA to 1A, T = 0 to 125°C, V = 4.5V to 7V,
O
J
I
C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
O1
O2
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
mA
mA
A
I
I
Quiescent Current (Fixed/ADJ) V ≤ 7V
I
I
= 5mA to 1A
= 5mA to 1A
5
7
GND
GND
I
OUT1,2
Quiescent Current (Fixed/Fixed) V ≤ 7V
I
OUT1,2
I
Total Current Limit I + I
O2
2
ST
O1
T
Thermal Shutdown
175
5
°C
SHDN
DT
Thermal Shutdown Hysteresis
°C
SHDN
Table 7: Electrical Characteristics Of Fixed Output 1.5V (I = 10mA to 1A, T = 0 to 125°C,
O
J
V = 4.5V to 7V, C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
I
O1
O2
Symbol
Parameter
Test Conditions
= 5mA to 1A, V = 4.75 to 5.25V
Min.
Typ.
Max.
Unit
V
Output Voltage 1.5V
I
1.47
1.5
1.53
V
O
O
I
T = 25°C
= 5mA to 1A, V = 4.75 to 5.25V
V
Output Voltage 1.5V
Line Regulation
I
1.455
1.5
1.545
15
V
mV
mV
V
O
O
I
∆V
∆V
V = 4.75 to 5.25V, I = 5mA to 1A
I O
O
O
Load Regulation
V = 4.75V, I = 10mA to 1A
12
I
O
V
Dropout Voltage ∆V = -1% I = 1A
1.3
D
O
O
I
Current Limit
V = 5.5V
1
A
S
I
I
Min. Output Current for
regulation
0
mA
OMIN
(1)(4)
e
T = 25°C
0.003
%
N
RMS Output Noise
SVR
Supply Voltage
V = 5V
60
dB
I
(2)(4)
Rejection
(5)
∆V /∆I
Transient Response
V = 5V, I = 1mA to 1A, t ≥ 1µs
%
%
O
O
I
O
r
10
Change of V with step
O
(5)
V = 5V, I = 1A to 1mA, t ≥ 1µs
I
O
f
10
(3)(4)
load change
(5)
∆V /∆V Transient Response
0 to 5V step input, I = 1mA to 1A,
O1
I
O
10
Change of V
with
t ≥ 1µs
OUT1
(3)(4)
r
application of V
I
(5)
∆V /∆I
Transient Response Short V = 5V, I = short to I = 10mA
%
O
O
I
O
O
20
Circuit Removal
(3)(4)
Response
(4)
T
I
= 1A, t
= 30ms
0.1
0.5
0.3
%/W
%
R
O
PULSE
Thermal Regulation
(4)
S
Temperature Stability
(4)
S
T = 125°C
%
Long Term Stability
(1000Hrs)
J
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: C = 20µF, C and C = 10µF. C , C and C are all X7R ceramic capacitors.
I
1
O2
I
O1
O2
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of V .
O
6/23
ST2L05
Table 8: Electrical Characteristics Of Fixed Output 1.8V (I = 10mA to 1A, T = 0 to 125°C,
O
J
V = 4.5V to 7V, C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
I
O1
O2
Symbol
Parameter
Test Conditions
= 5mA to 1A, V = 4.75 to 5.25V
Min.
Typ.
Max.
Unit
V
Output Voltage 1.8V
I
1.764
1.8
1.836
V
O
O
I
T = 25°C
= 5mA to 1A, V = 4.75 to 5.25V
V
Output Voltage 1.8V
Line Regulation
I
1.746
1.8
1.854
15
V
mV
mV
V
O
O
I
∆V
∆V
V = 4.75 to 5.25V, I = 5mA to 1A
I O
O
O
Load Regulation
V = 4.75V, I = 10mA to 1A
12
I
O
V
Dropout Voltage ∆V = -1% I = 1A
1.3
D
O
O
I
Current Limit
V = 5.5V
1
A
S
I
I
Min. Output Current for
regulation
0
mA
OMIN
(1)(4)
e
T = 25°C
0.003
%
N
RMS Output Noise
SVR
Supply Voltage
V = 5V
60
dB
I
(2)(4)
Rejection
(5)
∆V /∆I
Transient Response
V = 5V, I = 1mA to 1A, t ≥ 1µs
%
%
O
O
I
O
r
10
Change of V with step
O
(5)
V = 5V, I = 1A to 1mA, t ≥ 1µs
I
O
f
10
(3)(4)
load change
(5)
∆V /∆V Transient Response
0 to 5V step input, I = 1mA to 1A,
O1
I
O
10
Change of V
with
t ≥ 1µs
OUT1
(3)(4)
r
application of V
I
(5)
∆V /∆I
Transient Response Short V = 5V, I = short to I = 10mA
%
O
O
I
O
O
20
Circuit Removal
(3)(4)
Response
(4)
T
I
= 1A, t
= 30ms
0.1
0.5
0.3
%/W
%
R
O
PULSE
Thermal Regulation
(4)
S
Temperature Stability
(4)
S
T = 125°C
%
J
Long Term Stability
(1000Hrs)
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: C = 20µF, C and C = 10µF. C , C and C are all X7R ceramic capacitors.
I
1
O2
I
O1
O2
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of V .
O
7/23
ST2L05
Table 9: Electrical Characteristics Of Fixed Output 2.5V (I = 10mA to 1A, T = 0 to 125°C,
O
J
V = 4.5V to 7V, C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
I
O1
O2
Symbol
Parameter
Test Conditions
= 5mA to 1A, V = 4.75 to 5.25V
Min.
Typ.
Max.
Unit
V
Output Voltage 2.5V
I
2.45
2.5
2.55
V
O
O
I
T = 25°C
= 5mA to 1A, V = 4.75 to 5.25V
V
Output Voltage 2.5V
Line Regulation
I
2.425
2.5
2.575
15
V
mV
mV
V
O
O
I
∆V
∆V
V = 4.75 to 5.25V, I = 5mA to 1A
I O
O
O
Load Regulation
V = 4.75V, I = 10mA to 1A
12
I
O
V
Dropout Voltage ∆V = -1% I = 1A
1.3
D
O
O
I
Current Limit
V = 5.5V
1
A
S
I
I
Min. Output Current for
regulation
0
mA
OMIN
(1)(4)
e
T = 25°C
0.003
%
N
RMS Output Noise
SVR
Supply Voltage
V = 5V
60
dB
I
(2)(4)
Rejection
(5)
∆V /∆I
Transient Response
V = 5V, I = 1mA to 1A, t ≥ 1µs
%
%
O
O
I
O
r
10
Change of V with step
O
(5)
V = 5V, I = 1A to 1mA, t ≥ 1µs
I
O
f
10
(3)(4)
load change
(5)
∆V /∆V Transient Response
0 to 5V step input, I = 1mA to 1A,
O1
I
O
10
Change of V
with
t ≥ 1µs
OUT1
(3)(4)
r
application of V
I
(5)
∆V /∆I
Transient Response Short V = 5V, I = short to I = 10mA
%
O
O
I
O
O
20
Circuit Removal
(3)(4)
Response
(4)
T
I
= 1A, t
= 30ms
0.1
0.5
0.3
%/W
%
R
O
PULSE
Thermal Regulation
(4)
S
Temperature Stability
(4)
S
T = 125°C
%
Long Term Stability
(1000Hrs)
J
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: C = 20µF, C and C = 10µF. C , C and C are all X7R ceramic capacitors.
I
1
O2
I
O1
O2
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of V .
O
8/23
ST2L05
Table 10: Electrical Characteristics Of Fixed Output 2.8V (I = 10mA to 1A, T = 0 to 125°C,
O
J
V = 4.5V to 7V, C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
I
O1
O2
Symbol
Parameter
Test Conditions
= 5mA to 1A, V = 4.75 to 5.25V
Min.
Typ.
Max.
Unit
V
Output Voltage 2.8V
I
2.744
2.8
2.856
V
O
O
I
T = 25°C
= 5mA to 1A, V = 4.75 to 5.25V
V
Output Voltage 2.8V
Line Regulation
I
2.716
2.8
2.884
15
V
mV
mV
V
O
O
I
∆V
∆V
V = 4.75 to 5.25V, I = 5mA to 1A
I O
O
O
Load Regulation
V = 4.75V, I = 10mA to 1A
12
I
O
V
Dropout Voltage ∆V = -1% I = 1A
1.3
D
O
O
I
Current Limit
V = 5.5V
1
A
S
I
I
Min. Output Current for
regulation
0
mA
OMIN
(1)(4)
e
T = 25°C
0.003
%
N
RMS Output Noise
SVR
Supply Voltage
V = 5V
60
dB
I
(2)(4)
Rejection
(5)
∆V /∆I
Transient Response
V = 5V, I = 1mA to 1A, t ≥ 1µs
%
%
O
O
I
O
r
10
Change of V with step
O
(5)
V = 5V, I = 1A to 1mA, t ≥ 1µs
I
O
f
10
(3)(4)
load change
(5)
∆V /∆V Transient Response
0 to 5V step input, I = 1mA to 1A,
O1
I
O
10
Change of V
with
t ≥ 1µs
OUT1
(3)(4)
r
application of V
I
(5)
∆V /∆I
Transient Response Short V = 5V, I = short to I = 10mA
%
O
O
I
O
O
20
Circuit Removal
(3)(4)
Response
(4)
T
I
= 1A, t
= 30ms
0.1
0.5
0.3
%/W
%
R
O
PULSE
Thermal Regulation
(4)
S
Temperature Stability
(4)
S
T = 125°C
%
J
Long Term Stability
(1000Hrs)
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: C = 20µF, C and C = 10µF. C , C and C are all X7R ceramic capacitors.
I
1
O2
I
O1
O2
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of V .
O
9/23
ST2L05
Table 11: Electrical Characteristics Of Fixed Output 3.0V (I = 10mA to 1A, T = 0 to 125°C,
O
J
V = 4.5V to 7V, C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
I
O1
O2
Symbol
Parameter
Test Conditions
= 5mA to 1A, V = 4.75 to 5.25V
Min.
Typ.
Max.
Unit
V
Output Voltage 3.0V
I
2.94
3.0
3.06
V
O
O
I
T = 25°C
= 5mA to 1A, V = 4.75 to 5.25V
V
Output Voltage 3.0V
Line Regulation
I
2.91
3.0
3.09
15
V
mV
mV
V
O
O
I
∆V
∆V
V = 4.75 to 5.25V, I = 5mA to 1A
I O
O
O
Load Regulation
V = 4.75V, I = 10mA to 1A
12
I
O
V
Dropout Voltage ∆V = -1% I = 1A
1.3
D
O
O
I
Current Limit
V = 5.5V
1
A
S
I
I
Min. Output Current for
regulation
0
mA
OMIN
(1)(4)
e
T = 25°C
0.003
%
N
RMS Output Noise
SVR
Supply Voltage
V = 5V
60
dB
I
(2)(4)
Rejection
(5)
∆V /∆I
Transient Response
V = 5V, I = 1mA to 1A, t ≥ 1µs
%
%
O
O
I
O
r
10
Change of V with step
O
(5)
V = 5V, I = 1A to 1mA, t ≥ 1µs
I
O
f
10
(3)(4)
load change
(5)
∆V /∆V Transient Response
0 to 5V step input, I = 1mA to 1A,
O1
I
O
10
Change of V
with
t ≥ 1µs
OUT1
(3)(4)
r
application of V
I
(5)
∆V /∆I
Transient Response Short V = 5V, I = short to I = 10mA
%
O
O
I
O
O
20
Circuit Removal
(3)(4)
Response
(4)
T
I
= 1A, t
= 30ms
0.1
0.5
0.3
%/W
%
R
O
PULSE
Thermal Regulation
(4)
S
Temperature Stability
(4)
S
T = 125°C
%
J
Long Term Stability
(1000Hrs)
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: C = 20µF, C and C = 10µF. C , C and C are all X7R ceramic capacitors.
I
1
O2
I
O1
O2
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of V .
O
10/23
ST2L05
Table 12: Electrical Characteristics Of Fixed Output 3.3V (I = 10mA to 1A, T = 0 to 125°C,
O
J
V = 4.5V to 7V, C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
I
O1
O2
Symbol
Parameter
Test Conditions
= 5mA to 1A, V = 4.75 to 5.25V
Min.
Typ.
Max.
Unit
V
Output Voltage 3.3V
I
3.234
3.3
3.366
V
O
O
I
T = 25°C
= 5mA to 1A, V = 4.75 to 5.25V
V
Output Voltage 3.3V
Line Regulation
I
3.2
3.3
3.4
15
V
mV
mV
V
O
O
I
∆V
∆V
V = 4.75 to 5.25V, I = 5mA to 1A
I O
O
O
Load Regulation
V = 4.75V, I = 10mA to 1A
12
I
O
V
Dropout Voltage ∆V = -1% I = 1A
1.3
D
O
O
I
Current Limit
V = 5.5V
1
A
S
I
I
Min. Output Current for
regulation
0
mA
OMIN
(1)(4)
e
T = 25°C
0.003
%
N
RMS Output Noise
SVR
Supply Voltage
V = 5V
60
dB
I
(2)(4)
Rejection
(5)
∆V /∆I
Transient Response
V = 5V, I = 1mA to 1A, t ≥ 1µs
%
%
O
O
I
O
r
10
Change of V with step
O
(5)
V = 5V, I = 1A to 1mA, t ≥ 1µs
I
O
f
10
(3)(4)
load change
(5)
∆V /∆V Transient Response
0 to 5V step input, I = 1mA to 1A,
O1
I
O
10
Change of V
with
t ≥ 1µs
OUT1
(3)(4)
r
application of V
I
(5)
∆V /∆I
Transient Response Short V = 5V, I = short to I = 10mA
%
O
O
I
O
O
20
Circuit Removal
(3)(4)
Response
(4)
T
I
= 1A, t
= 30ms
0.1
0.5
0.3
%/W
%
R
O
PULSE
Thermal Regulation
(4)
S
Temperature Stability
(4)
S
T = 125°C
%
J
Long Term Stability
(1000Hrs)
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: C = 20µF, C and C = 10µF. C , C and C are all X7R ceramic capacitors.
I
1
O2
I
O1
O2
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of V .
O
11/23
ST2L05
Table 13: Electrical Characteristics Of Adjustable Output (I = 10mA to 1A, T = 0 to 125°C,
O
J
V = 4.5V to 7V, C = 4.7µF, C = C = 4.7µF, otherwise specified)
I
I
O1
O2
Symbol
Parameter
Test Conditions
= 5mA to 1A, V = 4.75 to 5.25V,
Min.
Typ.
Max.
Unit
V
Reference Voltage
I
1.225
1.25
1.275
V
O
O
I
T = 25°C
= 5mA to 1A, V = 4.75 to 5.25V
V
Reference Voltage
Line Regulation 2
Load Regulation 2
I
1.212
1.25
1.287
0.35
0.4
V
%
O
O
I
∆V
∆V
V = 4.75 to 5.25V, I = 5mA to 1A
I O
O2
O2
D
V = 4.75V, I = 10mA to 1A
%
I
O
V
Dropout Voltage ∆V = -1% I = 1A
1.3
V
O
O
I
Current Limit
V = 5.5V
1
A
S
I
I
Adjustable Current (sinking)
Adjustable Current Change
1
200
2
µA
nA
mA
ADJ
I
I = 10mA to 1A
O
∆ADJ
I
Min. Output Current for
regulation
OMIN
(1)(4)
e
T = 25°C
V = 5V
0.003
%
N
RMS Output Noise
SVR
Supply Voltage
60
dB
I
(2)(4)
Rejection
(5)
∆V /∆I
Transient Response
V = 5V, I = 1mA to 1A, t ≥ 1µs
%
%
O2 O2
I
O
r
10
Change of V with step
O1
(5)
V = 5V, I = 1A to 1mA, t ≥ 1µs
I
O
f
10
(3)(4)
load change
(5)
∆V /∆V Transient Response
0 to 5V step input, I = 1mA to 1A,
O2
I
O
10
Change of V
with
t ≥ 1µs
OUT1
(3)(4)
r
application of V
I
(5)
∆V /∆I
Transient Response Short V = 5V, I = short to I = 10mA
%
O2 O2
I
O
O
20
Circuit Removal
(3)(4)
Response
(4)
T
I
= 1A, t
= 30ms
0.1
0.5
0.3
%/W
%
R
O
PULSE
Thermal Regulation
(4)
S
Temperature Stability
(4)
S
T = 125°C
%
Long Term Stability
(1000Hrs)
J
NOTE 1: Bandwidth of 10 Hz to 10KHz.
NOTE 2: 120Hz input ripple.
NOTE 3: C = 20µF, C and C = 10µF. C , C and C are all X7R ceramic capacitors.
I
1
O2
I
O1
O2
NOTE 4: Guaranteed by design, not tested in production.
NOTE 5: % undershoot or overshoot of V .
O
APPLICATION HINTS
EXTERNAL CAPACITORS
Like any low-dropout regulator, the ST2L05 requires external capacitors for stability. We suggest
soldering both capacitors as close as possible to the relative pins (1, 4 and 5).
INPUT CAPACITOR
An input capacitor, whose value is, at least, 2.2µF is required; the amount of the input capacitance can be
increased without limit if a good quality tantalum or aluminium capacitor is used.SMD X7R or Y5V ceramic
multilayer capacitors could not ensure stability in any condition because of their variable characteristics
with Frequency and Temperature; the use of this capacitor is strictly related to the use of the output
capacitors. For more details read the “OUTPUT CAPACITOR SECTION”.The input capacitor must be
located at a distance of not more than 0.5" from the input pin of the device and returned to a clean analog
ground.
OUTPUT CAPACITOR
The ST2L05 is designed specifically to work with Ceramic and Tantalum capacitors.Special care must be
taken when a Ceramic multilayer capacitor is used.Due to their characteristics they can sometimes have
12/23
ST2L05
an ESR value lower than the minimum required by the ST2L05 and their relatively large capacitance can
change a lot depending on the ambient temperature.The test results of the ST2L05 stability using
multilayer ceramic capacitors show that a minimum value of 2.2µF is needed for both regulators. This
value can be increased without limit if the input capacitor value is major or equal to 4.7µF, and up to 10µF
if the input capacitor is minor than 4.7µF.Surface-mountable solid tantalum capacitors offer a good
combination of small physical size for the capacitance value and ESR in the range needed by the ST2L05.
The test results show good stability for both outputs with values of at least 1µF. The value can be
increased without limit for even better performance such as transient response and noise.
IMPORTANT:
The output capacitor must maintain its ESR in the stable region over the full operating temperature to
assure stability. More over, capacitor tolerance and variations due to temperature must be considered to
assure that the minimum amount of capacitance is provided at all times. For this reason, when a Ceramic
multilayer capacitor is used, the better choice for temperature coefficient is the X7R type, which holds the
capacitance within ±15%. The output capacitor should be located not more than 0.5" from the output pins
of the device and returned to a clean analog ground.
ADJUSTABLE REGULATOR
The ST2L05 has a 1.25V reference voltage between the output and the adjust pins (respectively pin 4 and
2). When a resistor R is placed between these two terminals, a constant current flows through R and
1
1
down to R to set the overall (V
to GND) output voltage. Minimum load current is 2mA max in all
2
O2
temperature conditions.
Figure 6: Application Circuit
V = V
(1+R /R )+I
R
ADJ 1
O
REF
1
2
I
is very small (typically 35µA) and constant: in the V calculation it can be ignored.
ADJ
O
13/23
ST2L05
TYPICAL CHARACTERISTICS
Figure 7: Reference Voltage vs Temperature
Figure 10: Reference Voltage vs Input Voltage
Figure 8: Reference Line Regulation vs
Figure 11: Dropout Voltage vs Temperature
Temperature
(Adjustable Output)
Figure 9: Reference Load Regulation vs
Figure 12: Dropout Voltage vs Input Voltage
Temperature
(Adjustable Output)
14/23
ST2L05
Figure 13: Minimum Load Current vs
Figure 16: Line Regulation vs Temperature
Temperature (Adjustable Output)
Figure 14: Adjust Pin Current vs Temperature
Figure 17: Load Regulation vs Temperature
(Adjustable Output)
Figure 15: Output Voltage vs Temperature
Figure 18: Output Voltage vs Input Voltage
15/23
ST2L05
Figure 19: Dropout Voltage vs Temperature
Figure 22: Supply Voltage Rejection vs
(Fixed Output)
Frequency
Figure 20: Dropout Voltage vs Input Voltage
Figure 23: Quiescent Current vs Temperature
(Fixed/ADJ Version)
Figure 21: Supply Voltage Rejection vs
Figure 24: Quiescent Current vs Temperature
Temperature
(Fixed/Fixed Version)
16/23
ST2L05
Figure 25: Short Circuit Removal Response
Figure 28: Change of V with Step Load
O
Change
V =5V, I =short circuit to 10mA, C =10µF, C =22µF all ceramic
I
O
O
I
V =5V, I =1A to 1mA, C =10µF, C =22µF all ceramic X5R,
I O O I
X5R, T =25°C
J
T =25°C, t
=1µs
J
FALL
Figure 26: Change of V with Step Load
Figure 29: Short Circuit Removal Response
O
Change
V =5V, I =1mA to 1A, C =10µF, C =22µF all ceramic X5R,
V =5V, I =short circuit to 10mA, C =10µF, C =22µF all ceramic
I O O I
I
O
O
I
T =25°C
X5R, T =25°C
J
J
Figure 27: Change of V with Step Load
Figure 30: Change of V with Step Load
O
O
Change
Change
V =5V, I =1mA to 1A, C =10µF, C =22µF all ceramic X5R,
V =5V, I =1mA to 1A, C =10µF, C =22µF all ceramic X5R,
I O O I
I
O
O
I
T =25°C, t
=1µs
T =25°C, t
=1µs
J
RISE
J
RISE
17/23
ST2L05
Figure 31: Change of V with Step Load
Figure 33: Start-Up Transient
O
Change
V =0 to 5V, I =1mA, C =10µF, C =22µF all ceramic X5R, T =25°C,
V =5V, I =1mA to 1A, C =10µF, C =22µF all ceramic X5R,
I
O
O
I
J
I
O
O
I
t ≤ 1µs
RISE
T =25°C, t
=t =1µs
J
RISE FALL
Figure 32: Change of V with Step Load
Figure 34: Start-Up Transient
O
Change
V =5V, I =1A to 1mA, C =10µF, C =22µF all ceramic X5R,
V =0 to 5V, I =1A, C =10µF, C =22µF all ceramic X5R, T =25°C,
I O O I J
I
O
O
I
T =25°C, t
J
=1µs
t
≤ 1µs
FALL
RISE
18/23
ST2L05
SPAK-5L MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
1.78
0.03
TYP
MAX.
2.03
MIN.
0.070
0.001
MAX.
0.080
0.005
A
A2
C
0.13
0.25
0.25
0.010
0.010
C1
D
1.02
7.87
0.63
1.27
8.13
0.79
0.040
0.310
0.025
0.050
0.320
0.031
D1
F
G
1.69
6.8
0.067
0.268
0.220
G1
H1
H2
H3
L
5.59
9.27
8.89
9.52
9.14
0.365
0.350
0.410
0.375
0.360
0.420
10.41
10.67
L1
L2
M
7.49
0.25
0.295
0.010
8.89
0.79
9.14
1.04
0.350
0.031
0.360
0.041
N
V
3˚
6˚
3˚
6˚
PO13F1/B
19/23
ST2L05
DFN8 (5x6) MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
b
0.80
0.90
1.00
0.032
0.035
0.016
0.197
0.165
0.236
0.140
0.049
0.031
0.039
0.35
4.05
3.40
0.70
0.40
5.00
4.2
0.47
4.30
3.65
0.90
0.014
0.163
0.134
0.028
0.018
0.167
0.144
0.035
D
D2
E
6.00
3.55
1.27
0.80
E2
e
L
20/23
ST2L05
Tape & Reel SPAK-xL MECHANICAL DATA
mm.
TYP
inch
DIM.
MIN.
MAX.
180
MIN.
TYP.
MAX.
7.086
0.519
A
C
12.8
20.2
60
13.0
13.2
0.504
0.795
2.362
0.512
D
N
T
14.4
9.90
11.05
2.50
4.1
0.567
0.390
0.431
0.098
0.161
0.476
Ao
Bo
Ko
Po
P
9.70
10.85
2.30
3.9
9.80
10.95
2.40
4.0
0.382
0.423
0.090
0.153
0.468
0.386
0.427
0.094
0.157
0.472
11.9
12.0
12.1
21/23
ST2L05
Table 14: Revision History
Date
Revision
Description of Changes
18-Nov-2004
24-Nov-2004
06-Dec-2004
4
5
6
Remove PPAK Version.
New Mechanical Data Release.
New Mechanical Data Release.
22/23
ST2L05
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
All other names are the property of their respective owners
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23/23
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