ZR78L ZETEX [Zetex Semiconductors], ZR78L Datasheet

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ZR78L

Manufacturer Part Number
ZR78L
Description
2.85 TO 12 VOLT FIXED POSITIVE LOCAL VOLTAGE REGULATOR
Manufacturer
ZETEX [Zetex Semiconductors]
Datasheet

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ZR78L03
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ZR78L08GTA
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2.85 TO 12 VOLT FIXED POSITIVE
LOCAL VOLTAGE REGULATOR
ISSUE 3 - DECEMBER 2001
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 350 A. 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.
4-200
FEATURES
VOLTAGE RANGE
ZR78L028
ZR78L03
ZR78L033
ZR78L04
ZR78L048
ZR78L05
ZR78L052
ZR78L057
ZR78L06
ZR78L07
ZR78L08
ZR78L085
ZR78L09
ZR78L10
ZR78L12
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
2.85V
3.0V
3.3V
4.0V
4.85V
5.0V
5.2V
5.7V
6.0V
7.0V
8.0V
8.5V
9.0V
10.0V
12.0V
SERIES
ZR78L

Related parts for ZR78L

ZR78L Summary of contents

Page 1

... TO 12 VOLT FIXED POSITIVE LOCAL VOLTAGE REGULATOR ISSUE 3 - DECEMBER 2001 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 ...

Page 2

... The following data represents pulse test conditions with junction temperatures as indicated at the initiation of the test. Continuous operation of the devices with the stated conditions might exceed the power dissipation limits of the chosen package. ZR78L028 TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V ...

Page 3

... ZR78L03 TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V Line Regulation O V Load Regulation O l Quiescent Current q l Quiescent Current Change Output Noise Voltage Ripple Rejection Input Voltage Required To in Maintain Regulation Average Temperature O Coefficient of V ...

Page 4

... Output Noise Voltage Ripple Rejection Input Voltage Required To in Maintain Regulation Average Temperature O Coefficient of V ZR78L048 TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V Line Regulation O V Load Regulation O l Quiescent Current q l Quiescent Current Change I ...

Page 5

... ZR78L10TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V Line Regulation O V Load Regulation O l Quiescent Current q l Quiescent Current Change Output Noise Voltage Ripple Rejection Input Voltage Required To in Maintain Regulation Average Temperature O Coefficient of V ZR78L12TEST CONDITIONS (Unless otherwise stated):T ...

Page 6

... ZR78L028 ZR78L03 ZR78L04 ZR78L057 ZR78L09 3.01 3.00 2.99 2.98 2.86 2.85 2.84 ZR78L028 2.82 -50 - Temperature ( °C) Output Voltage Temperature Coefficient 9.08 ZR78L09 9.04 9.00 8.96 8.92 -50 - Temperature ( C) Output Voltage Temperature Coefficient 500 400 300 200 100 V =10V in 0 -50 - Temperature ( C) Peak Output Current vs. Temperature TYPICAL CHARACTERISTICS 5.72 ZR78L03 5.70 5.68 5. 5mA ...

Page 7

... ZR78L033 ZR78L05 ZR78L06 ZR78L08 ZR78L10 5.01 ZR78L05 5.00 4.99 4.98 3.30 3.29 3.28 ZR78L033 3.27 -50 - Temperature (° C) Output Voltage Temperature Coefficient 10.08 ZR78L10 10.04 10.00 9.96 9.92 - -50 0 Temperature (° C) Output Voltage Temperature Coefficient 500 400 300 200 100 V = 10V in 0 -50 - Temperature (° C) Peak Output Current v Temperature TYPICAL CHARACTERISTICS ...

Page 8

... Output Noise Voltage Ripple Rejection Input Voltage Required To in Maintain Regulation Average Temperature O Coefficient of V ZR78L06 TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V Line Regulation O V Load Regulation O l Quiescent Current q l Quiescent Current Change ...

Page 9

... ZR78L05 TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V Line Regulation O V Load Regulation O l Quiescent Current q l Quiescent Current Change Output Noise Voltage Ripple Rejection Input Voltage Required To in Maintain Regulation Average Temperature O Coefficient of V ...

Page 10

... ZR78L SERIES ZR78L085 TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V Line Regulation O V Load Regulation O l Quiescent Current q l Quiescent Current Change Output Noise Voltage Ripple Rejection Input Voltage Required To in Maintain Regulation Average Temperature ...

Page 11

... Ripple Rejection vs. Ripple Frequency ( +0.5 0 -0.5 -1 Thermal Resistance v Pulse Width ZR78L028 ZR78L03 ZR78L04 ZR78L057 ZR78L09 I = 100mA out V = 200mV p/p in ZR78L028 ZR78L03 ZR78L04 ZR78L057 ZR78L09 100 1K 10K Ripple Frequency (Hz) LOAD CURRENT 100 mA 0 OUTPUT VOLTAGE ...

Page 12

... Ripple Rejection v Ripple Frequency ( (Vo+ 4) +0.5 0 -0.5 -1 Thermal Resistance v Pulse Width ZR78L033 ZR78L05 ZR78L06 ZR78L10 Io = 100mA Vin = Vout + 3V Vin = 200mV p/p ZR78L033 ZR78L05 ZR78L06 ZR78L08 ZR78L10 100 1K 10K Ripple Frequency (Hz) LOAD CURRENT 100 mA 0 OUTPUT VOLTAGE DEVIATION ...

Page 13

... ZR78L07 TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Output Voltage O V Line Regulation O V Load Regulation O l Quiescent Current q l Quiescent Current Change Output Noise Voltage Ripple Rejection Input Voltage Required To in Maintain Regulation Average Temperature O Coefficient of V ...

Page 14

... Temperature (°C) Peak Output Current v Temperature TYPICAL CHARACTERISTICS 7.10 7.00 6.90 8.55 8.50 8.45 100125 Output Voltage Temperature Coefficient 100125 Quiescent Current v Temperature 100 125 Drop-Out Votlage v Temperature ZR78L048 ZR78L052 ZR78L07 ZR78L085 ZR78L12 ZR78L07 Io = 10mA Vin = Vout + 4v ZR78L085 -50 - 100125 Temperature (°C) 500 Io=0 Vin=Vout+4v 450 ...

Page 15

... CONNECTION DIAGRAMS SO8 Package Suffix – N8 Top View TO92 Package Suffix – C Bottom View ORDERING INFORMATION Part No Package ZR78L s C TO92 ZR78L s G SOT223 ZR78L s N8 SO8 s Voltage Option eg 3V device in TO92 package part number ZR78L03C part marked ZR78L03 eg 12V device in SOT223 package ...

Page 16

... ZR78L048 ZR78L052 ZR78L07 ZR78L085 ZR78L12 10 1 0.1 0. 100 Frequency (Hz) Output Impedance v Frequency Input Voltage Vo+9 Vo+4 +0.2 Output Voltage Deviation 0 -0.2 Io= 100mA Cout= 0 dVin/dt= 5v/ Time (µs) Line Transient Response 160 D=1 140 TO92 PACKAGE 120 100 D=0 D=0.2 20 D=0.1 D=0.05 D=0 0 100m 1m 10m 1 Pulse Width (s) Thermal Resistance v Pulse Width ...

Page 17

... THERMAL CHARACTERISTICS 160 D=1 140 SO8 PACKAGE 120 100 D=0 D=0.2 D=0.1 20 D=0.05 D=0 0 100µ 1m 10m 100m 1 10 Pulse Width (s) Thermal Resistance v Pulse Width 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 100 Power dissipation Derating ZR78L SERIES SOT223 SO8 TO92 0 -50 - 100125 Ambient Temperature (°C) ...

Page 18

... APPLICATIONS Fixed Output Regulator Input ZR78L*** Gnd Q25 Q19 Q4 Q17 Q21 Q20 R5 Q1 Output Input Vo= Vreg + (Vreg/R1 + Iq)R2 Current Regulator Input ZR78L*** Iq Io= (Vreg/R1 Q10 Q8 R14 R13 R2 Adjustable Output Regulator Output ZR78L*** Gnd R1 Output out Gnd ...

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