GM2574 GAMMA | Alldatasheet

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Technical content

Features

‹ Standard SOP8 package ‹ 3.3V, 5V, and Adjustable output versions ‹ Adjustable version output voltage range 1.23V to 37V ‹ VOUT accuracy is to ±2% under specified input voltage the output load conditions ‹ Input voltage range up to 40V ‹ Requires only 4 external components with High efficiency ‹ TTL shutdown capability, low power standby mode ‹ Built-in thermal shutdown, current limit protection ‹ Uses standard inductors ‹ 52 kHz fixed frequency internal oscillator Typical Application Circuits 7V – 40V Unregulated DC Input C IN 100µF VIN GM2574-5.0 FB Output GND 100µH regulated output, COUT 680µF D1 1N5822 SD 4 5, 6, 7, 8

2 GM2574V1.02 GM2574 1.5A STEP DOWN VOLTAGE SWITCHING REGULATORS Marking Information and Pin Configurations (Top View) SO8

Ordering Information

Ordering Number Output Voltage Package Shipping GM2574-AS8T Adj SOP8 100 Units / Tube GM2574-AS8R Adj SOP8 2500 Units / Reel GM2574-3.3S8T 3.3 SOP8 100 Units / Tube GM2574-3.3S8R 3.3 SOP8 2500 Units / Reel GM2574-5.0S8T 5.0 SOP8 100 Units / Tube GM2574-5.0S8R 5.0 SOP8 2500 Units / Reel GM2574 VVVAYWW VVV: 033=3.3V, 050=5.0V, 00A=ADJ A: Assembly / Testing factory code Y: Year WW: Week VIN S D VOUT F B G N D G N D G N D G N D

1.5A STEP DOWN VOLTAGE SWITCHING REGULATORS GM2574V1.02 Absolute Maximum Ratings (Note 1) Rating Value Unit Maximum Supply Voltage 45 V SD Pin Input Voltage / Feed Back Pin Voltage -0.3 + V IN + 0.3 V Output Voltage to Ground (Steady State) -0.3 + V IN + 0.3 V Power Dissipation Internally Limited - Thermal Resistance – Junction to Ambient (θJA) ** 2 square inch of FR-4, double sided, 1oz. minimum copper weight, is recommended 36 ℃/W Storage Temperature Range - 65 to 150 ℃ Maximum Junction Temperature + 150 ℃ Operating Temperature Range - 40 to 125 ℃ Minimum EDS Rating (Note 2) 2 kV Lead Temperature (Soldering, 10 sec) + 260 ℃ Block Diagram VIN 1 5 ~ 8 VOUT Regulator With Enable Comparator 52KHz Oscillator Driver Thermal Shutdown Current Limit SD Reset 1.23V Reference R1* R2* Error Amplifier FB Gnd VOUT = 3.3V, R1 = 2.49K, R2 = 4.18K VOUT = 5.0V, R1 = 2.49K, R2 = 7.57K VOUT = ADJ, R1 = OPEN, R2 = 0Ω

4 GM2574V1.02 GM2574 1.5A STEP DOWN VOLTAGE SWITCHING REGULATORS (Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature rage) Parameter Condition Symbol Min Typ Max Unit 1.205 1.255 Output Voltage 4.5V < VIN < 40V, 0.2A < ILOAD < 1.5A VOUT 1.180 1.230 1.280 V Efficiency VIN =12V, ILOAD=1.5A, VOUT = 9V η 88 % (Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature rage) Parameter Condition Symbol Min Typ Max Unit 3.163 3.390 Output Voltage 4.5V < VIN < 40V, 0.2A < ILOAD < 1.5A VOUT 3.201 3.300 3.432 V Efficiency VIN =12V, ILOAD=1.5A η 73 % (Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature rage) Parameter Condition Symbol Min Typ Max Unit 4.850 5.150 Output Voltage 4.5V < VIN < 40V, 0.2A < ILOAD < 1.5A VOUT 4.800 5.000 5.200 V Efficiency VIN =12V, ILOAD=1.5A η 77 %

1.5A STEP DOWN VOLTAGE SWITCHING REGULATORS GM2574V1.02 Electrical Characteristics: All Output Voltage Versions (Specifications with standard type face are for T = 25℃, and those with bold face type apply over full Operating Temperature rage) Parameter Condition Symbol Min Typ Max Unit

100 Feedback Bias

Current VFB =5V (Adjustable Version Only) Ib - 50 500 nA Oscillator Frequency (Note 3) fo 42 52 58 kHz

1.8 Saturation

Voltage lOUT = 1.5A (Notes 4, 5) VSAT - 1.4 2.0 V Max Duty Cycle (ON) (Note 5) DC 93 98 - % 3.6 6.9 Current Limit Peak Current (Notes 4, 5) lCL 3.4 4.5 7.5 A Output =0V (Notes 4, 6) 2 Output Leakage Current Output = -1V (Notes 4, 6) lL 7.5 mA Quiescent Current (Note 6) lQ - 5 10 mA Standby Quiescent Current SD Pin = 5V (OFF) lSTBY - 50 200 µA 1.0 Low (ON) VIH - 1.2 0.8 2.2 SD Pin Logic lnput Level High (OFF) V IL 2.4 1.4 - V VLOGlC = 2.5V (OFF) IH 12 30 µA SD Pin lnput Current VLOGlC = 0.5V (ON) IL 0 10 Note 1: Stresses greater than those listed unde r Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Note 2: The human body model is a 100pF capacitor discharge through a 1.5K Ω resistor into each pin. Note 3: External components such as the catch di ode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator system performance. Where the GM2574 is used as shown in Figure 1&2 test circuits. Note 4: No diode, inductor or capacitor connected to output pin. Note 5: Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Note 6: Feedback pin removed from output and connec ted to 12V for the 3.V, 5V and Adj version, to force the output transistor switch OFF.

1.5A STEP DOWN VOLTAGE SWITCHING REGULATORS GM2574V1.02 Package Outline Dimensions – SO 8 (0.356 - 0.508) (0.406 - 0.270) 0.016 - 0.050 D 0.189 - 0.197 (4.800 - 5.004) SEATING PLAN 0.014 - 0.020 0.150 - 0.157 (3.810 - 3.988) 0.008 - 0.010 (0.203 - 0.254) 8.0 MAX 0.053 - 0.059 (1.346 - 1.753) 0.004 - 0.010 0.228 - 0.244 (5.791 - 6.198) 0.050 (1.270) TYP (0.012 - 0.254)

8 GM2574V1.02 GM2574 1.5A STEP DOWN VOLTAGE SWITCHING REGULATORS 6 8 10 Ordering Number GM 2574 A S8 R APM Gamma Micro Circuit Type Output Voltage A: Adj 3.3 = 3.3V 5.0 =5.0V Package Type S8: SO 8 Shipping Type R: Taping & Reel T: Tube