ATH10T033 datasheet(3/14 Pages) ASTEC

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Environmental & Absolute Maximum Ratings (Voltages are with respect to GND)

Characteristics

Symbols

Conditions

Min

Typ

Max

Units

Track Input Voltage

Vtrack

–0.3

—

Vin + 0.3

Operating Temperature Range

Over Vin Range

–40 (i)

—

°C

Solder Reflow Temperature

Treflow

Surface temperature of module body or pins

235 (ii)

°C

Storage Temperature

—

–40

—

125

°C

Mechanical Shock

Per Mil-STD-883D, Method 2002.3

—

TBD

—

G’s

1 msec, ½ Sine, mounted

Mechanical Vibration

Mil-STD-883D, Method 2007.2

Suffix H

—

TBD

—

G’s

20-2000 Hz

Suffix S

—

TBD

—

Weight

—

3.7

—

grams

Flammability

—

Meets UL 94V-O

Notes:

(i) For operation below 0 °C the external capacitors must bave stable characteristics. use either a low ESR tantalum, Os-Con, or ceramic capacitor.

(ii) During reflow of SMD package version do not elevate peak temperature of the module, pins or internal components above the stated maximum. For

further guidance refer to the application note, “Reflow Soldering Requirements for Plug-in Power Surface Mount Products.”

ATH10T033 Series —3.3 V Input

10-A, 3.3-V Input Non-Isolated

Step-Down Switching Power Module

Specifications (Unless otherwise stated, Ta =25 °C, Vin =3.3 V, Vo =2 V, Cin =330 µF, Cout =0 µF, and Io =Iomax)

ATH10T033

Characteristics

Symbols

Conditions

Min

Typ

Max

Units

Output Current

0.8 V

≤ Vo ≤ 2.5 V,

60 °C, 200 LFM airflow

—

10 (1)

25 °C, natural convection

—

10 (1)

Input Voltage Range

Vin

Over Io range

2.95 (2)

—

3.65

Set-Point Voltage Tolerance

Vo tol

—

±2 (3)

%Vo

Temperature Variation

∆Regtemp

–40 °C <Ta < +85 °C

—

±0.5

—

%Vo

Line Regulation

∆Regline

Over Vin range

—

±10

—

Load Regulation

∆Regload

Over Io range

—

±12

—

Total Output Variation

∆Regtot

Includes set-point, line, load,

——±3 (3)

%Vo

–40 °C

≤ Ta ≤ +85 °C

Efficiency

Io =7 A

RSET = 2.21 kΩ Vo = 2.5 V

—

RSET = 4.12 kΩ Vo = 2.0 V

—

RSET = 5.49 kΩ Vo = 1.8 V

—

RSET = 8.87 kΩ Vo = 1.5 V

—

RSET = 17.4 kΩ Vo = 1.2 V

—

RSET = 36.5 kΩ Vo = 1.0 V

—

Vo Ripple (pk-pk)

20 MHz bandwidth

—

mVpp

Over-Current Threshold

Io trip

Reset, followed by auto-recovery

—

Transient Response

1 A/µs load step, 50 to 100 % Iomax,

Cout =330 µF

ttr

Recovery Time

—

µSec

∆Vtr

Vo over/undershoot

—

100

—

Margin Up/Down Adjust

∆Vomargin

—

± 5

—

Margin Input Current (pins 9 /10)

IIL margin

Pin to GND

—

– 8 (4)

—µA

Track Input Current (pin 8)

IIL track

Pin to GND

—

–130 (5)

µA

Track Slew Rate Capability

dVtrack/dt

Vtrack – Vo ≤ 50 mV and Vtrack < Vo(nom)

—

V/ms

Under-Voltage Lockout

UVLO

Vin increasing

—

2.95

—

Vin decreasing

—

2.8

—

Inhibit Control (pin3)

Referenced to GND

Input High Voltage

VIH

Vin –0.5

—

Open (5)

Input Low Voltage

VIL

–0.2

—

0.6

Input Low Current

IIL inhibit

Pin to GND

—

–130

—

µA

Input Standby Current

Iin inh

Inhibit (pin 3) to GND, Track (pin 8) open

—

Switching Frequency

ƒs

Over Vin and Io ranges

275

300

325

kHz

External Input Capacitance

Cin

330 (6)

——µF

External Output Capacitance

Cout

330 (7)

15,000

µF

Reliability

MTBF

Per Bellcore TR-332

5.7

—

106 Hrs

50 % stress, Ta =40 °C, ground benign

Notes: (1) See SOA curves or consult factory for appropriate derating.

(2) The minimum input voltage is equal to 2.95 V or Vout + 0.5 V, whichever is greater.

(3) The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a tolerance of 1 %

with 100 ppm/°C or better temperature stability.

(4) A small low-leakage (<100 nA) MOSFET is recommended to control this pin. The open-circuit voltage is less than 1 Vdc.

(5) This control pin has an internal pull-up to the input voltage Vin. If it is left open-circuit the module will operate when input power is applied. A small

low-leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application note.

(6) A 330 µF input capacitor is required for proper operation. The capacitor must be rated for a minimum of 500 mA rms of ripple current.

(7) An external output capacitor is not required for basic operation. Adding 330 µF of distributed capacitance at the load will improve the transient response.

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