REG103 Burr-Brown Corporation, REG103 Datasheet
REG103
Available stocks
Related parts for REG103
REG103 Summary of contents
Page 1
... Key parameters are guaranteed over the specified temperature range (– +85 C). The SO-8 version of the REG103 has an Error pin which provides a “power good” flag indicating the regulator is in regulation. The REG103 is well pro- tected: internal circuitry provides a current limit which protects the load from damage ...
Page 2
... SOT223-5 Surface Mount JC NOTES: (1) The REG103 does not require a minimum output capacitor for stability. However, transient response can be improved with proper capacitor selection. (2) Dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at V for V less than 2 ...
Page 3
... Error 4 5 GND Enable (UA Package) NOTE: (1) For REG103A-A: voltage setting resistor pin. All other models: noise reduction capacitor pin. ELECTROSTATIC DISCHARGE SENSITIVITY IN This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage ...
Page 4
... NOTES: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “REG103UA-5/2K5” will get a single 2500-piece Tape and Reel. (2) Scheduled availability June, 2000. ® REG103 PACKAGE ...
Page 5
... Output Current (mA) OUTPUT VOLTAGE vs TEMPERATURE (Output Voltage % Change Referred 10mA at +25 C) OUT = 10mA = 100mA = 500mA –50 – 100 Temperature ( C) LINE REGULATION vs TEMPERATURE ( 15V ) IN OUT IN = 10mA = 100mA –50 – 100 Temperature ( C) REG103 500 125 125 ® ...
Page 6
... OUT V OUT OUT V OUT 6V I OUT 5V < 500mA) OUT 10 1 0.1 0.01 75 100 125 10 6 LINE TRANSIENT RESPONSE REG103-3.3 Load = 100mA OUT OUT 50 s/div LINE TRANSIENT RESPONSE = 3.3V 0. 100mA FB OUT OUT OUT 50 s/div OUTPUT NOISE DENSITY ...
Page 7
... GROUND PIN CURRENT, NOT ENABLED vs TEMPERATURE ENABLE –50 – 100 Temperature ( TEMPERATURE ADJUST REG103-A –40 – 100 120 Temperature ( C) RIPPLE REJECTION vs FREQUENCY OUT C OUT 100 1000 10000 Frequency (Hz) REG103 125 140 = 0 100000 ® ...
Page 8
... J ENABLE RIPPLE REJECTION RIPPLE 100 200 300 Load Current (mA) OUTPUT DISABLE TIME s/div ® REG103 (Cont.) OUT = 3Vp- 120Hz 2V 0 400 500 OUT OUT ENABLE ...
Page 9
... BASIC OPERATION The REG103 series is a family of LDO (Low Drop-Out) linear regulators. The family includes five fixed output versions (2.5V to 5.0V) and an adjustable output version. An internal DMOS power device provides low dropout regula- tion with near constant ground pin current (largely indepen- dent of load and drop-out conditions) and very fast line and load transient response ...
Page 10
... See Figure 9 for improved output noise performance for two capacitor combinations. The REG103 utilizes an internal charge pump to develop an internal supply voltage sufficient to drive the gate of the DMOS pass element above V ing noise (nominal switching frequency = 2MHz) is not measurable at the output of the regulator ...
Page 11
... IN OUT drop-out under DC load conditions. For large step changes in load current, the REG103 requires a larger voltage drop across it to avoid degraded transient response. The boundary of this “transient drop-out” region is shown as the top line in Figure 10. Values of V voltage drop above this line insure normal transient re- sponse. In the transient dropout region between “ ...
Page 12
... The internal protection circuitry of the REG103 has been designed to protect against overload conditions. It was not intended to replace proper heat sinking. Continuously run- ning the REG103 into thermal shutdown will degrade reli- ability. POWER DISSIPATION The REG103 is available in three different package configu- rations ...
Page 13
... FIGURE 13. Thermal Resistance versus PCB Area for the Five Lead SOT-223. REG103 Surface Mount Package 1 oz. copper REG103 Surface Mount Package 1 oz. copper SOT-223 Surface Mount Package Circuit Board Copper Area REG103 DDPAK Surface Mount Package Circuit Board Copper Area REG103 REG103 ® ...