SLVS638C January   2006  – November 2014

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Functional Block Diagram
  5. Revision History
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics — TL2575
    6. 7.6 Electrical Characteristics — TL2575HV
    7. 7.7 Typical Characteristics
  8. Parameter Measurement Information
    1. 8.1 Test Circuits
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Feedback Connection
      2. 9.3.2 ON/OFF Input
    4. 9.4 Device Functional Modes
      1. 9.4.1 Standby Mode
  10. 10Application and Implementation
    1. 10.1 Typical Application
      1. 10.1.1 Design Requirements
      2. 10.1.2 Detailed Design Procedure
        1. 10.1.2.1 Input Capacitor (CIN)
        2. 10.1.2.2 Output Capacitor (COUT)
        3. 10.1.2.3 Catch Diode
        4. 10.1.2.4 Inductor
        5. 10.1.2.5 Output Voltage Ripple and Transients
        6. 10.1.2.6 Grounding
        7. 10.1.2.7 Reverse Current Considerations
        8. 10.1.2.8 Buck Regulator Design Procedure
        9. 10.1.2.9 Inductor Selection Guide
      3. 10.1.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

7 Specifications

7.1 Absolute Maximum Ratings(1)

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
VIN Supply voltage TL2575HV 60 V
TL2575 42
ON/OFF input voltage range –0.3 VIN V
Output voltage to GND (steady state) –1 V
TJ Maximum junction temperature 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.

7.2 Handling Ratings

MIN MAX UNIT
Tstg Storage temperature range –65 150 °C
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) 0 2000 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) 0 1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
VIN Supply voltage TL2575HV 4.75 60 V
TL2575 4.75 40
TJ Operating virtual junction temperature –40 125 °C

7.4 Thermal Information

THERMAL METRIC(1) KTT KV N UNIT
5 PINS 5 PINS 16 PINS
RθJA Junction-to-ambient thermal resistance 26.5 26.5 67 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 31.8 31.8 57
RθJC(bot) Junction-to-case (bottom) thermal resistance 0.38 0.38
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report (SPRA953).

7.5 Electrical Characteristics — TL2575

ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 11)
PARAMETER TEST CONDITIONS TJ TL2575 UNIT
MIN TYP MAX
VOUT Output voltage TL2575-33 VIN = 12 V, ILOAD = 0.2 A 25°C 3.234 3.3 3.366 V
4.75 V ≤ VIN ≤ 40 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 3.168 3.3 3.432
Full range 3.135 3.465
TL2575-05 VIN = 12 V, ILOAD = 0.2 A 25°C 4.9 5 5.1
8 V ≤ VIN ≤ 40 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 4.8 5 5.2
Full range 4.75 5.25
TL2575-12 VIN = 25 V, ILOAD = 0.2 A 25°C 11.76 12 12.24
15 V ≤ VIN ≤ 40 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 11.52 12 12.48
Full range 11.4 12.6
TL2575-15 VIN = 30 V, ILOAD = 0.2 A 25°C 14.7 15 15.3
18 V ≤ VIN ≤ 40 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 14.4 15 15.6
Full range 14.25 15 15.75
Feedback voltage TL2575-ADJ VIN = 12 V, VOUT = 5 V,
ILOAD = 0.2 A
25°C 1.217 1.23 1.243 V
8 V ≤ VIN ≤ 40 V, VOUT = 5 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 1.193 1.23 1.267
Full range 1.18 1.28
η Efficiency TL2575-33 VIN = 12 V, ILOAD = 1 A 25°C 75%
TL2575-05 VIN = 12 V, ILOAD = 1 A 77%
TL2575-12 VIN = 15 V, ILOAD = 1 A 88%
TL2575-15 VIN = 18 V, ILOAD = 1 A 88%
TL2575-ADJ VIN = 12 V, VOUT = 5 V,
ILOAD = 1 A
77%
IIB Feedback bias current VOUT = 5 V (ADJ version only) 25°C 50 100 nA
Full range 500
fo Oscillator frequency(1) 25°C 47 52 58 kHz
Full range 42 63
VSAT Saturation voltage IOUT = 1 A(2) 25°C 0.9 1.2 V
Full range 1.4
Maximum duty cycle(3) 25°C 93% 98%
ICL Switch peak current(1)(2) 25°C 1.7 2.8 3.6 A
Full range 1.3 4
IL Output leakage current VIN = 40(4), Output = 0 V 25°C 2 mA
VIN = 40(4), Output = –1 V 7.5 30
IQ Quiescent current(4) 25°C 5 10 mA
ISTBY Standby quiescent current OFF (ON/OFF = 5 V) 25°C 50 200 μA
VIH ON/OFF high-level logic
input voltage
OFF (VOUT = 0 V) 25°C 2.2 1.4 V
Full range 2.4
VIL ON/OFF low-level logic
input voltage
ON (VOUT = nominal voltage) 25°C 1.2 1 V
Full range 0.8
IIH ON/OFF high-level input current OFF (ON/OFF = 5 V) 25°C 12 30 μA
IIL ON/OFF low-level input current ON (ON/OFF = 0 V) 25°C 0 10 μA
(1) In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to ≈18 kHz and the minimum duty cycle from 5% to ≈2%. The resulting output voltage drops to ≈40% of its nominal value, causing the average power dissipated by the IC to lower.
(2) Output is not connected to diode, inductor, or capacitor. Output is sourcing current.
(3) FEEDBACK is disconnected from output and connected to 0 V.
(4) To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V versions and to 25 V for the 12-V and 15-V versions.

7.6 Electrical Characteristics — TL2575HV

ILOAD = 200 mA, VIN = 12 V for 3.3-V, 5-V, and adjustable versions, VIN = 25 V for 12-V version, VIN = 30 V for 15-V version (unless otherwise noted) (see Figure 11)
PARAMETER TEST CONDITIONS TJ TL2575HV UNIT
MIN TYP MAX
VOUT Output voltage TL2575HV-33 VIN = 12 V, ILOAD = 0.2 A 25°C 3.234 3.3 3.366 V
4.75 V ≤ VIN ≤ 60 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 3.168 3.3 3.450
Full range 3.135 3.482
TL2575HV-05 VIN = 12 V, ILOAD = 0.2 A 25°C 4.9 5 5.1
8 V ≤ VIN ≤ 60 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 4.8 5 5.225
Full range 4.75 5.275
TL2575HV-12 VIN = 25 V, ILOAD = 0.2 A 25°C 11.76 12 12.24
15 V ≤ VIN ≤ 60 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 11.52 12 12.54
Full range 11.4 12.66
TL2575HV-15 VIN = 30 V, ILOAD = 0.2 A 25°C 14.7 15 15.3
18 V ≤ VIN ≤ 60 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 14.4 15 15.68
Full range 14.25 15 15.83
Feedback voltage TL2575HV-ADJ VIN = 12 V, VOUT = 5 V,
ILOAD = 0.2 A
25°C 1.217 1.23 1.243 V
8 V ≤ VIN ≤ 60 V, VOUT = 5 V,
0.2 A ≤ ILOAD ≤ 1 A
25°C 1.193 1.23 1.273
Full range 1.180 1.286
η Efficiency TL2575HV-33 VIN = 12 V, ILOAD = 1 A 25°C 75%
TL2575HV-05 VIN = 12 V, ILOAD = 1 A 77%
TL2575HV-12 VIN = 15 V, ILOAD = 1 A 88%
TL2575HV-15 VIN = 18 V, ILOAD = 1 A 88%
TL2575HV-ADJ VIN = 12 V, VOUT = 5 V,
ILOAD = 1 A
77%
IIB Feedback bias current VOUT = 5 V (ADJ version only) 25°C 50 100 nA
Full range 500
fo Oscillator frequency(1) 25°C 47 52 58 kHz
Full range 42 63
VSAT Saturation voltage IOUT = 1 A(2) 25°C 0.9 1.2 V
Full range 1.4
Maximum duty cycle(3) 25°C 93% 98%
ICL Switch peak current(1)(2) 25°C 1.7 2.8 3.6 A
Full range 1.3 4
IL Output leakage current VIN = 60(4), Output = 0 V 25°C 2 mA
VIN = 60(4), Output = –1 V 7.5 30
IQ Quiescent current(4) 25°C 5 10 mA
ISTBY Standby quiescent current OFF (ON/OFF = 5 V) 25°C 50 200 μA
VIH ON/OFF high-level logic
input voltage
OFF (VOUT = 0 V) 25°C 2.2 1.4 V
Full range 2.4
VIL ON/OFF low-level logic input voltage ON (VOUT = nominal voltage) 25°C 1.2 1 V
Full range 0.8
IIH ON/OFF high-level input current OFF (ON/OFF = 5 V) 25°C 12 30 μA
IIL ON/OFF low-level input current ON (ON/OFF = 0 V) 0 10 μA
(1) In the event of an output short or an overload condition, self-protection features lower the oscillator frequency to ≈18 kHz and the minimum duty cycle from 5% to ≈2%. The resulting output voltage drops to ≈40% of its nominal value, causing the average power dissipated by the IC to lower.
(2) Output is not connected to diode, inductor, or capacitor. Output is sourcing current.
(3) FEEDBACK is disconnected from output and connected to 0 V.
(4) To force the output transistor off, FEEDBACK is disconnected from output and connected to 12 V for the adjustable, 3.3-V, and 5-V versions and to 25 V for the 12-V and 15-V versions.

7.7 Typical Characteristics

g_norm_out_v.gifFigure 1. Normalized Output Voltage
g_dropout_v.gifFigure 3. Dropout Voltage
g_quiesc_curr.gifFigure 5. Quiescent Current
g_norm_osc_f.gifFigure 7. Oscillator Frequency
g_min_op_vcc.gifFigure 9. Minimum Operating Voltage
g_line_reg_adj.gifFigure 2. Line Regulation
g_curr_limit.gifFigure 4. Current Limit
g_stby_curr.gifFigure 6. Standby Quiescent Current
g_sw_sat_v.gifFigure 8. Switch Saturation Voltage
g_fb_bias_curr.gifFigure 10. FEEDBACK Current