HA17524P Renesas Electronics Corporation., HA17524P Datasheet
HA17524P
Available stocks
Related parts for HA17524P
HA17524P Summary of contents
Page 1
... Wide external circuit applications including single-end and push-pull method Reference power source output stage and switching output stage include current limiting protection circuit. Ordering Information Type No. HA17524P HA17524FP Pin Arrangement HA17524P/FP Package 16 pin dual in line plastic(DP-16) 16 pin flat plastic (FP-16DA) INV ...
Page 2
... HA17524P/FP Functional Description Principals of HA17524 Operation The HA17524 switching regulator circuit, using pulse width modulation (PWM), is constructed as shown in figure 1. Timing resistances R and timing capacitance C T constant current generated Ramp signals (saw-tooth waves) at the C T oscillator is available for reference input signal to comparator which control the pulse width. ...
Page 3
... V To Positive Regulated REF Output Voltage Error Amp 1 (a) Forward Output Stabilizing Source 2.5 ( Figure 2 Error Amplifier Biasing HA17524P/FP V REF Error Amp Negative Regulated Output Voltage V O (b) Reverse Output Stabilizing Source 2.5 ( ...
Page 4
... HA17524P/FP Blocks Description Oscillator: The oscillation frequency f is calculated from the following equations. Figure 3 shows one example. f 1.15/(R • 1.8k to 100 0.001 to 0 140 Hz to 500 kHz Figure 3 Oscillating Frequency vs Timing Resistance Then the ramp wave shown in figure 4 is available at pin 7, C current I generated by R ...
Page 5
... IC. V REF Terminal Waveform 3 T Discharge V – V REF – · V · T Terminal Waveform T as shown in figure 5, increases output 0.003 0.01 0.03 Timing Capacitance ±0.4 V) can be used as a reference REF HA17524P/ – 3.8 – 0 also connected as a bias OUT 5 ...
Page 6
... HA17524P/FP Error Amplifier: Figure 2 shows error amplifier biasing, applied input voltage must be set within the range of common-mode input voltage (1 3.4 V). Inserting a resistor and capacitor between phase compensation terminal (pin 9) and GND in series provides phase compensation. Current Limiter: The sense amplifier threshold voltage (V ...
Page 7
... Operating waveforms inside the IC are also shown. HA17524 0 0.01 F Figure 8 Stepdown Voltage Type Chopper Switching Regulator (15 (1) (11) Inv E 1 (2) (12) Non Inv (16) (13) Ref (6) (14 (7) (4) C +CL T Shut (10) (5) –CL Down (3) (9) Comp Osc Out 0.001 F (8) GND 50 k HA17524P/ the output OUT ( OUT ...
Page 8
... HA17524P/FP C Terminal T OSC OUT Comparator Out Q(F/F) Q(F/ (Q) 8 Output Voltage of Error Amp Dead Time Figure 9 Operating Waveforms ...
Page 9
... Figure 11 Tracking Switching Regulator INV Input E 1 NON INV Input REF CL(+) T SHUT DOWN CL(–) COMP Osc Out GND = 5V CC 300 200 CL(+) CL(–) COMP + 4.7 F 0.001 F HA17524P/FP – OUT – +15V + 50 F 50T 20mA 20T + 50T 50 F –15V 0.1 F 620 510 1 9 ...
Page 10
... HA17524P/FP Push Pull Switching Regulator: Figure 12 shows the circuit configuration of push-pull switching regulator that uses transformer. This system is suited for high power. Output transistors inside HA17524 can drive external switching transistors 28V INV. Input 5k NON-INV. Input 0 REF 0. SHUT DOWN OSC Out ...
Page 11
... Reference output current Current through C terminal T Continuous total power dissipation Operating free-air temperature range Storage temperature range Notes: 1. With respect to network ground terminal 2. The reference voltage can be given by connecting the V the supply voltage. In this configuration HA17524P: Value at Ta Symbol Rating 100 C I ...
Page 12
... HA17524P/FP Electrical Characteristics (V Item Symbol Regulator Output voltage V Input regulation Ripple rejection R Output regulation Output voltage change with output temperature Short-circuit output I current (Note) Error Input offset voltage V amplifier Input bias current I Open-loop voltage A gain Common-mode V input voltage range Common-mode CMR ...
Page 13
... Min Typ Max –0.7 to +1.0 — — IS 180 200 220 — 0.2 — — — CE — 0.01 50 — CE(sat — E — 0.2 — — 0.1 — — 5.0 10 HA17524P/FP Unit Test Conditions V mV V(Pin V(Pin 2) – V(Pin mV – –250 Pins 11, ...
Page 14
... HA17524P/FP Characteristic Curves 6.0 5.0 4.0 3.0 2.0 1.0 0 Output Saturation Voltage vs. Output Collector Current 1.0 0 Output Voltage vs. Supply Voltage Supply Voltage V ( Output Collector Current I (mA ...
Page 15
... Oscillating Frequency vs. Timing Resistance 500 100 500 200 100 100 Timing Resistance Output Voltage vs. Ambient Temperature 5 5.0 4.9 4.8 – Ambient Temperature ( C) HA17524P/ ...
Page 16
... HA17524P/ 1.0 0.3 0.1 0.001 16 Dead Time vs. Timing Capacitance 0.003 0.01 0.03 Timing Capacitance 0.1 ...
Page 17
... Hitachi Code JEDEC EIAJ Mass (reference value 7.80 0.70 0.15 M 0.12 Hitachi Code JEDEC EIAJ Mass (reference value) HA17524P/FP Unit: mm 7.62 + 0.13 0.25 – 0.05 DP-16 Conforms Conforms 1.07 g Unit 0.20 – 0.30 1.15 0 – 8 0.20 FP-16DA — ...
Page 18
... HA17524P/FP Cautions 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi’s or any third party’s patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party’s rights, including intellectual property rights, in connection with use of the information contained in this document ...