GM7109

GM7109 GAMMA | Alldatasheet

Document overview

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Technical content

Features

‹ Standard SOP8 & PSOP8 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 ‹ 150 kHz fixed frequency internal oscillator Typical Application Circuits Unregulated DC Input C IN 680µF VIN GM7109-5.0 FB Output GND 68µH regulated output, COUT 220µF D1 1N5824 SD 4 5, 6, 7, 8

2 GM7109V1.00 GM7109 150KHz, 2A STEP DOWN VOLTAGE SWITCHING REGULATORS Marking Information and Pin Configurations (Top View) SO8 & PSO8

Ordering Information

Ordering Number Output Voltage Package Shipping GM7109-AS8T Adj SOP8 100 Units / Tube GM7109-AS8R Adj SOP8 2500 Units / Reel GM7109-APS8T Adj PSOP8 100 Units / Tube GM7109-APS8R Adj PSOP8 2500 Units / Reel GM7109-3.3S8T 3.3 SOP8 100 Units / Tube GM7109-3.3S8R 3.3 SOP8 2500 Units / Reel GM7109-3.3PS8T 3.3 PSOP8 100 Units / Tube GM7109-3.3PS8R 3.3 PSOP8 2500 Units / Reel GM7109-5.0S8T 5.0 SOP8 100 Units / Tube GM7109-5.0S8R 5.0 SOP8 2500 Units / Reel GM7109-5.0PS8T 5.0 PSOP8 100 Units / Tube GM7109-5.0PS8R 5.0 PSOP8 2500 Units / Reel GM7109 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

150KHz, 2A STEP DOWN VOLTAGE SWITCHING REGULATORS GM7109V1.00 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 Current Source Bias 1.235V Reference 2.5V Reference Start UP COMP 220 220mV SD VIN COMP 2A Switch 2.5V Current Limit DriverLatch COMP AMP GM R1 = 2.5K Thermal Limit 150KHz OSC Reset Freq. Shift OUTPUT GND For 3.3V, R2 = 4.2K For 5.0V, R2 = 7.6K For Adj, R2 = 0 and R1 = OPEN

4 GM7109V1.00 GM7109 150KHz, 2A 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 1.193 1.267 Output Voltage 4.5V < VIN < 40V, 0.2A < ILOAD < 2A VOUT 1.180 1.230 1.280 V Efficiency VIN =12V, ILOAD=2.0A, VOUT = 3V 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 3.168 3.432 Output Voltage 4.75V < VIN < 40V, 0.2A < ILOAD < 2A VOUT 3.135 3.300 3.465 V Efficiency VIN =12V, ILOAD=2.0A 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 4.800 5.200 Output Voltage 7V < VIN < 40V, 0.2A < ILOAD < 2A VOUT 4.7500 5.000 5.250 V Efficiency VIN =12V, ILOAD=2.0A η 80 %

150KHz, 2A STEP DOWN VOLTAGE SWITCHING REGULATORS GM7109V1.00 Electrical Characteristics: All Output Voltage Versions (Specifications with standard type face are for TJ = 25℃, and those with bold face type apply over full Operating Temperature rage. Unless otherwise specified, VIN = 12V) Parameter Condition Symbol Min Typ Max Unit

50 Feedback Bias

Current VFB =1.3V (Adjustable Version Only) Ib - 10 100 nA 127 173 Oscillator Frequency (Note 6) fo 110 150 173 kHz

1.4 Saturation

Voltage IOUT = 2A (Notes 7, 8) VSAT - 1.16 1.5 V Max Duty Cycle (ON) (Note 8) DC 100 - % Min Duty Cycle (OFF) (Note 9) DC 0 % Current Limit Peak Current (Notes 7, 8) lCL 3.4 A Output =0V (Notes 7, 9, 10) - - 100 µA Output Leakage Current Output = -0.9V (Note 10) lL - 2 - mA Quiescent Current (Note 9) lQ - 5 - mA Standby Quiescent Current SD Pin = 5V (OFF), Note 10 lSTBY - 70 200 µA Low (ON) VIH - 1.3 0.6 SD Pin Logic lnput Level High (OFF) V IL 2.0 1.3 - V VLOGlC = 2.5V (OFF) IH 5 15 µA SD Pin lnput Current VLOGlC = 0.5V (ON) IL 0.02 5 µA Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. Note 2: The human body model is a 100pF capacitor discharged through a 1.5KΩresistor into each pin. Note 3: Typical numbers are at 25°C and represent the most likely norm. Note 4: All limits guaranteed at room temperature (standard ty pe face) and at temperature extremes (bold type face). All room temperature limits are 100% producti on tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). Note 5: External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching regulator system performance. When the GM7109 is used as shown in the Figure 1 test circuit, system performance will be as shown in system parameters section of Electrical Characteristics. Note 6: The switching frequency is reduced when the second stage current limit is activated. Note 7: No diode, inductor or capacitor connected to output pin. Note 8: Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Note 9: Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version.

8 GM7109V1.00 GM7109 150KHz, 2A STEP DOWN VOLTAGE SWITCHING REGULATORS 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) Package Outline Dimensions – PSO 8 (0.356 - 0.508) SEATING PLAN 0.014 - 0.020 (0.406 - 0.270) 0.016 - 0.050 0.053 - 0.059 (1.346 - 1.753) (0.012 - 0.254) 0.008 - 0.010 (0.203 - 0.254) 8.0 MAX0.004 - 0.010 D 0.150 - 0.157 (3.810 - 3.988) 0.050 (1.270) TYP 0.095 - 0.130 (2.410 - 3.300) 0.228 - 0.244 (5.791 - 6.198) 0.189 - 0.197 (4.800 - 5.004) 0.090 (2.286)

150KHz, 2A STEP DOWN VOLTAGE SWITCHING REGULATORS GM7109V1.00 6 8 10 Ordering Number GM 7109 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 PS8: Power SO 8 Shipping Type R: Taping & Reel T: Tube