Datasheet LT1175 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | 500mA Negative Low Dropout Micropower Regulator |
| Pages / Page | 20 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. Shutdown Input Current. Shutdown … |
| File Format / Size | PDF / 221 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Shutdown Input Current. Shutdown Thresholds. SHDN Pin Characteristics. GND Pin Current
Model Line for this Datasheet
- LT1175CN8#PBF LT1175CN8-5#PBF LT1175CQ#PBF LT1175CQ#TRPBF LT1175CQ-5#PBF LT1175CQ-5#TRPBF LT1175CS8#PBF LT1175CS8#TRPBF LT1175CS8-5#PBF LT1175CS8-5#TRPBF LT1175CST-5#PBF LT1175CST-5#TRPBF LT1175CT#06PBF LT1175CT#PBF LT1175CT-5#06PBF LT1175CT-5#PBF LT1175IN8#PBF LT1175IN8-5#PBF LT1175IQ#PBF LT1175IQ#TRPBF LT1175IQ-5#PBF LT1175IQ-5#TRPBF LT1175IS8#PBF LT1175IS8#TRPBF LT1175IS8-5#PBF LT1175IS8-5#TRPBF LT1175IST-5#PBF LT1175IST-5#TRPBF LT1175IT#PBF LT1175IT-5#PBF LT1175MPQ#PBF LT1175MPQ#TR LT1175MPQ#TRPBF LT1175MPQ-5 LT1175MPQ-5#PBF LT1175MPQ-5#TRPBF LT1175MPS8#PBF LT1175MPS8#TRPBF LT1175MPS8-5 LT1175MPS8-5#PBF LT1175MPS8-5#TRPBF
Text Version of Document
LT1175
TYPICAL PERFORMANCE CHARACTERISTICS Shutdown Input Current Shutdown Thresholds SHDN Pin Characteristics
25 2.5 15 VIN = 25V CHARACTERISTICS DO NOT POSITIVE THRESHOLD CHANGE SIGNIFICANTLY WITH 20 2.0 10 TEMPERATURE, SO A SINGLE CURVE IS SHOWN. POSITIVE CURRENT FLOWS INTO 15 1.5 5 SHDN PIN TJ = 25°C NEGATIVE THRESHOLD TJ = 125°C 10 1.0 0 THRESHOLD (V) T PIN CURRENT (μA) INPUT CURRENT (μA) J = –55°C IF SHDN PIN IS NEGATIVE WITH RESPECT TO INPUT VOLTAGE AND 5 0.5 –5 INPUT VOLTAGE IS LESS THAN 15V, DEVICE IS OFF NEGATIVE BREAKOVER POINT WILL BELOW THRESHOLD BE ABOUT 8V BELOW –VIN 0 0 –10 0 5 10 15 20 25 –50 –25 0 25 50 75 100 125 –25 –20 –15 –10 –5 0 5 10 15 20 25 INPUT VOLTAGE (V) TEMPERATURE (°C) SHUTDOWN TO GROUND VOLTAGE (V) 1175 G07 1175 G08 1175 G09
GND Pin Current Ripple Rejection
20 100 VOUT = 12V (ADJUSTABLE) 16 80 WITH 0.1μF ACROSS DIVIDER RESISTOR 12 60 VOUT = 5V V POWER IN – VOUT = 2V (FIXED) T TRANSISTOR J = 25°C VOUT = 12V 8 IN DROPOUT 40 (ADJUSTABLE) REJECTION (dB) TJ = –55°C TJ = 25°C GROUND PIN CURRENT (mA) 4 20 IOUT = 100mA V V IN – VOUT = 2V IN – VOUT ≥ 3V C T OUT = 1μF TANT J = 25°C 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 10 100 1k 10k 100k 1M OUTPUT CURRENT (A) FREQUENCY (Hz) 1175 G10 RIPPLE REJECTION IS RELATIVELY INDEPENDENT OF INPUT VOLTAGE AND LOAD FOR CURRENTS BETWEEN 25mA AND 500mA. LARGER OUTPUT CAPACITORS DO NOT IMPROVE REJECTION FOR FREQUENCIES BELOW 50kHz. AT VERY LIGHT LOADS, REJECTION WILL 1175 G11 IMPROVE WITH LARGER OUTPUT CAPACITORS 1175ff 7
TYPICAL PERFORMANCE CHARACTERISTICS Shutdown Input Current Shutdown Thresholds SHDN Pin Characteristics
25 2.5 15 VIN = 25V CHARACTERISTICS DO NOT POSITIVE THRESHOLD CHANGE SIGNIFICANTLY WITH 20 2.0 10 TEMPERATURE, SO A SINGLE CURVE IS SHOWN. POSITIVE CURRENT FLOWS INTO 15 1.5 5 SHDN PIN TJ = 25°C NEGATIVE THRESHOLD TJ = 125°C 10 1.0 0 THRESHOLD (V) T PIN CURRENT (μA) INPUT CURRENT (μA) J = –55°C IF SHDN PIN IS NEGATIVE WITH RESPECT TO INPUT VOLTAGE AND 5 0.5 –5 INPUT VOLTAGE IS LESS THAN 15V, DEVICE IS OFF NEGATIVE BREAKOVER POINT WILL BELOW THRESHOLD BE ABOUT 8V BELOW –VIN 0 0 –10 0 5 10 15 20 25 –50 –25 0 25 50 75 100 125 –25 –20 –15 –10 –5 0 5 10 15 20 25 INPUT VOLTAGE (V) TEMPERATURE (°C) SHUTDOWN TO GROUND VOLTAGE (V) 1175 G07 1175 G08 1175 G09
GND Pin Current Ripple Rejection
20 100 VOUT = 12V (ADJUSTABLE) 16 80 WITH 0.1μF ACROSS DIVIDER RESISTOR 12 60 VOUT = 5V V POWER IN – VOUT = 2V (FIXED) T TRANSISTOR J = 25°C VOUT = 12V 8 IN DROPOUT 40 (ADJUSTABLE) REJECTION (dB) TJ = –55°C TJ = 25°C GROUND PIN CURRENT (mA) 4 20 IOUT = 100mA V V IN – VOUT = 2V IN – VOUT ≥ 3V C T OUT = 1μF TANT J = 25°C 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 10 100 1k 10k 100k 1M OUTPUT CURRENT (A) FREQUENCY (Hz) 1175 G10 RIPPLE REJECTION IS RELATIVELY INDEPENDENT OF INPUT VOLTAGE AND LOAD FOR CURRENTS BETWEEN 25mA AND 500mA. LARGER OUTPUT CAPACITORS DO NOT IMPROVE REJECTION FOR FREQUENCIES BELOW 50kHz. AT VERY LIGHT LOADS, REJECTION WILL 1175 G11 IMPROVE WITH LARGER OUTPUT CAPACITORS 1175ff 7
