SLLS654C April   2005  – December 2014 MC33063A-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Oscillator Characteristics
    6. 6.6 Output Switch Characteristics
    7. 6.7 Comparator Characteristics
    8. 6.8 Total Device Characteristics
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Reference Voltage
      2. 7.3.2 Current Limit
      3. 7.3.3 Current Limit of Typical Operation Waveforms
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Step-Up Converter
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Step-Down Converter
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
      3. 8.2.3 Voltage Inverter Converter
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
        3. 8.2.3.3 Application Curves
      4. 8.2.4 12 V Battery Based Automotive Supply
        1. 8.2.4.1 Design Requirements
        2. 8.2.4.2 Detailed Design Procedure
        3. 8.2.4.3 Application Curve
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6 Specifications

6.1 Absolute Maximum Ratings(1)

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
Supply voltage, VCC 40 V
Comparator Inverting Input voltage range, VIR –0.3 40 V
Switch Collector voltage, VC(switch) 40 V
Switch Emitter voltage, VE(switch) VPIN1 = 40 V 40 V
Switch Collector to Switch Emitter voltage, VCE(switch) 40 V
Driver Collector voltage, VC(driver) 40 V
Driver Collector current, IC(driver) 100 mA
Switch current, ISW 1.5 A
Operating virtual junction temperature, TJ 150 °C
Storage temperature, Tstg –65 150 °C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per AEC Q100-002(1) ±2000 V
Charged device model (CDM), per AEC Q100-011 Corner pins (1, 4, 5, and 8) ±750
Other pins ±500
(1) AEC Q100-002 indicates HBM stressing is done in accordance with the ANSI/ESDA/JEDEC JS-001 specification.

6.3 Recommended Operating Conditions

MIN NOM MAX UNIT
VCC Supply voltage 3 40 V
TA Operating free-air temperature –40 125 °C

6.4 Thermal Information

THERMAL METRIC(1) MC33063A-Q1 UNIT
D
8 PINS
RθJA Junction-to-ambient thermal resistance(2)(3) 121.9 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 68.1
RθJB Junction-to-board thermal resistance 62.3
ψJT Junction-to-top characterization parameter 19.9
ψJB Junction-to-board characterization parameter 61.8
RθJC(bot) Junction-to-case (bottom) thermal resistance N/A
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) Maximum power dissipation is a function of TJ(max), RθJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA) / RθJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
(3) The package thermal impedance is calculated in accordance with JESD 51-7.

6.5 Oscillator Characteristics

VCC = 5 V, TA = full operating range (unless otherwise noted) (see block diagram)
PARAMETER TEST CONDITIONS TA MIN TYP MAX UNIT
fosc Oscillator frequency VPIN5 = 0 V, CT = 1 nF 25°C 24 33 42 kHz
Ichg Charge current VCC = 5 V to 40 V 25°C 24 35 42 μA
Idischg Discharge current VCC = 5 V to 40 V 25°C 140 220 260 μA
Idischg/Ichg Discharge-to-charge current ratio VPIN7 = VCC 25°C 5.2 6.5 7.5
VIpk Current-limit sense voltage Idischg = Ichg 25°C 250 300 350 mV

6.6 Output Switch Characteristics(1)

VCC = 5 V, TA = full operating range (unless otherwise noted). See the Functional Block Diagram.
PARAMETER TEST CONDITIONS TA MIN TYP MAX UNIT
VCE(sat) Saturation voltage –
Darlington connection		 ISW = 1 A, pins 1 and 8 connected Full range 1 1.3 V
VCE(sat) Saturation voltage –
non-Darlington connection(2)		 ISW = 1 A, RPIN8 = 82 Ω to VCC,
Forced β ~ 20		 Full range 0.45 0.7 V
hFE DC current gain ISW = 1 A, VCE = 5 V 25°C 50 75
IC(off) Collector off-state current VCE = 40 V Full range 0.01 100 μA
(1) Low duty-cycle pulse testing is used to maintain junction temperature as close to ambient temperature as possible.
(2) In the non-Darlington configuration, if the output switch is driven into hard saturation at low switch currents (≤300 mA) and high driver currents (≥30 mA), it may take up to 2 μs for the switch to come out of saturation. This condition effectively shortens the off time at frequencies ≥30 kHz, becoming magnified as temperature increases. The following output drive condition is recommended in the non-Darlington configuration:
Forced β of output switch = IC,SW / (IC,driver – 7 mA) ≥ 10, where ∼7 mA is required by the 100-Ω resistor in the emitter of the driver to forward bias the Vbe of the switch.

6.7 Comparator Characteristics

VCC = 5 V, TA = full operating range (unless otherwise noted). See the Functional Block Diagram.
PARAMETER TEST CONDITIONS TA MIN TYP MAX UNIT
Vth Threshold voltage 25°C 1.225 1.25 1.275 V
Full range 1.21 1.29
ΔVth Threshold-voltage line regulation VCC = 5 V to 40 V Full range 1.4 5 mV
IIB Input bias current VIN = 0 V Full range –20 –400 nA

6.8 Total Device Characteristics

VCC = 5 V, TA = full operating range (unless otherwise noted). See the Functional Block Diagram.
PARAMETER TEST CONDITIONS TA MIN MAX UNIT
ICC Supply current VCC = 5 V to 40 V, CT = 1 nF,
VPIN7 = VCC, VPIN5 > Vth,
VPIN2 = GND, All other pins open		 Full range 4 mA

6.9 Typical Characteristics

g_toff_ct_lls654.gif
Figure 1. Output Switch On-Off Time vs
Oscillator Timing Capacitor
g_vce_ic_lls654.gif
Figure 3. Output Switch Saturation Voltage vs
Collector Current (Common-Emitter Configuration)
g_icc_vcc_lls654.gif
Figure 5. Standby Supply Current vs Supply Voltage
g_vce_ie_lls654.gif
Figure 2. Output Switch Saturation Voltage vs
Emitter Current (Emitter-Follower Configuration)
g_vipk_ta_lls654.gif
Figure 4. Current-Limit Sense Voltage vs Temperature