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PDF ZR78LsN8 Data sheet ( Hoja de datos )
| Número de pieza | ZR78LsN8 | |
| Descripción | 2.85 TO 12 VOLT FIXED POSITIVE LOCAL VOLTAGE REGULATOR | |
| Fabricantes | Zetex Semiconductors | |
| Logotipo |  |
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2.85 TO 12 VOLT FIXED POSITIVE
LOCAL VOLTAGE REGULATOR
ISSUE 3 - DECEMBER 2001
ZR78L
SERIES
DEVICE DESCRIPTION
The ZR78L Series three terminal fixed positive
voltage regulators feature internal circuit
current limit and thermal shutdown making
the devices difficult to destroy. The circuit
design allows creation of any custom voltage
in the range 2.85 to 12 volts. The devices are
available in a small outline surface mount
package, ideal for applications where space
saving is important, as well as through hole
TO92 style packaging. The devices are suited
to local voltage regulation applications, where
problems could be encountered with
distributed single source regulation, as well as
more general voltage regulation applications.
The ZR78L Series show performance
characteristics superior to other local voltage
regulators. The initial output voltage is
maintained to within 2.5% with a quiescent
current of typically 350µA. Output voltage
change, with input voltage and load current, is
much lower than competitive devices. The
ZR78L devices are completely stable with no
external components. The device will shut
down under thermal overload conditions but
as the device cools, regulation will restart.
FEATURES
• Small outline SOT223 package
• SO8 package (3.3V and 5.0V)
• TO92 package
• 2.85 to 12 Volt
• Output current up to 200mA
• Tight initial tolerance
• Low quiescent current
• -55 to 125°C temperature range
• No external components
• Internal thermal shutdown
• Internal short circuit current limit
VOLTAGE RANGE
ZR78L028 2.85V
ZR78L03 3.0V
ZR78L033 3.3V
ZR78L04 4.0V
ZR78L048 4.85V
ZR78L05 5.0V
ZR78L052 5.2V
ZR78L057 5.7V
ZR78L06 6.0V
ZR78L07 7.0V
ZR78L08 8.0V
ZR78L085 8.5V
ZR78L09 9.0V
ZR78L10 10.0V
ZR78L12 12.0V
4-200
1 page  
ZR78L
SERIES
ZR78L10TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=14V
SYMBOL PARAMETER
CONDITIONS MIN. TYP. MAX. UNITS
VO Output Voltage
9.75
IO=1 to 200mA τ 9.6
10
10.25
10.4
V
V
Vin=12 to 20V
9.6
IO=1 to 100mA τ
∆VO Line Regulation
Vin=12 to 20V
∆VO Load Regulation
IO=1 to 200mA
IO=1 to 100mA
lq Quiescent Current
τ
∆lq Quiescent Current Change IO=1 to 200mA
Vin=12 to 20V
10.4 V
12 40 mV
9 30 mV
3 mV
350 600 µA
100 µA
100 µA
Vn Output Noise Voltage
∆Vin /∆VO Ripple Rejection
f=10Hz to 10kHz
Vin=13 to 18V
f=120Hz
43
150
57
µV rms
dB
Vin Input Voltage Required To
Maintain Regulation
12 11.7
V
∆VO /∆T Average Temperature
Coefficient of VO
IO=5.0mA τ
0.25
mV/°C
ZR78L12TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=16V
SYMBOL PARAMETER
CONDITIONS MIN. TYP. MAX. UNITS
VO Output Voltage
11.7 12
IO=1 to 200mA τ 11.52
Vin=14 to 20V
11.52
IO=1 to 100mA τ
∆VO Line Regulation
Vin=14 to 20V
12
∆VO Load Regulation
IO=1 to 200mA
IO=1 to 100mA
9
3
lq Quiescent Current
τ
350
∆lq Quiescent Current Change IO=1 to 200mA
Vin=14 to 20V
12.3
12.48
12.48
V
V
V
40 mV
30 mV
mV
600 µA
100 µA
100 µA
Vn Output Noise Voltage
∆Vin /∆VO Ripple Rejection
f=10Hz to 10kHz
Vin=15 to 18V
f=120Hz
43
150
57
µV rms
dB
Vin Input Voltage Required To
Maintain Regulation
14 13.7
V
∆VO /∆T Average Temperature
Coefficient of VO
IO=5.0mA τ
0.25
mV/°C
τ =Tj = -55 to 125 °C
5 Page 
ZR78L
SERIES
TYPICAL CHARACTERISTICS
ZR78L028 ZR78L03
ZR78L04 ZR78L057
ZR78L09
10
1.0
0.1
Io = 100mA
VIN = VOUT+ 4V
ZR78L09
ZR78L057
ZR78L04
ZR78L03
ZR78L028
0.01
100
1K
10K 100K
Frequency (Hz)
Output Impedance vs. Frequency
90
80
Io = 100mA
Vin = Vout + 3V
⌬Vin = 200mV p/p
70
60
50
ZR78L028
40
ZR78L03
ZR78L04
ZR78L057
30 ZR78L09
20
10
0
10 100 1K 10K 100K
Ripple Frequency (Hz)
Ripple Rejection vs. Ripple Frequency
+0.5
0
INPUT VOLTAGE
OUTPUT VOLTAGE
DEVIATION
(VO + 9)
(V + 4)
O
-0.5
IO = 100mA
COUT = 0
-1.0 dVIN /dt = 5V/µs
0 10 20 30 40 50
Time (us)
Line Transient Response
160 D=1
140
TO92 PACKAGE
120
100
80
D=0.5
60
40
20
0
0
D=0.2
D=0.1
D=0.05
D=0
1m 10m 100m 1
Pulse Width (s)
10
Thermal Resistance v Pulse Width
LOAD CURRENT
100 mA
0
+0.5
0
OUTPUT VOLTAGE
DEVIATION
-0.5
V IN = Vo+ 4V
COUT= 0
dIo /dt = 1A/µs
-1.0
0 10 20 30 40 50
Time (us)
Load Transient Response
48 D=1
40 SOT223 PACKAGE
32
D=0.5
24
16 D=0.2
D=0.1
8 D=0.05
D=0
0
1m 10m 100m 1
10
Pulse Width(s)
Thermal Resistance v Pulse Width
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet ZR78LsN8.PDF ] | |
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