For assistance or to order, call (800) 531-5782
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
2 AMP POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
78HT200 Series
Standard Application
C1 = Optional 1µF ceramic
C2 = Required 100µF electrolytic
Pin-Out Information
Pin No. Function
1V
in
2 GND
3V
out
Ordering Information
78HT2 C
Output Voltage
(For dimensions and PC board
layout see Package Style 500.)
XX Y
33 = 3.3 Volts
46 = 4.6 Volts
05 = 5.0 Volts
53 = 5.25 Volts
65 = 6.5 Volts
75 = 7.5 Volts
10 = 10.0 Volts
Package Suffix
V = Vertical Mount
S = Surface Mount
H = Horizontal
Mount
•High Efficiency > 82%
•Wide Input Range
•Self-Contained Inductor
•Short-Circuit Protection
•Over-Temperature Protection
•Fast Transient Response
The 78HT200 is a series of wide
input voltage, 3 terminal Integrated
Switching Regulators (ISRs). Employ-
ing a ceramic substrate, these ISRs
have a maximum output current of 2A.
The output voltage is laser trimmed
for high accuracy.
The 78HT200 series regulators
have internal short-circuit and over-
temperature protection and may be
used in a wide variety of applications.
78HT200
C2
+
Vout
GNDGND
Vin
C1
1
2
3
Specifications
Characteristics
78HT200 SERIES
(Ta = 25°C unless noted) Symbols Conditions Min Typ Max Units
Output Current IoOver Vin range 0.1* — 2.0 A
Input Voltage Range Vin Io = 0.1 to 2.0A Vo < 4.6V 7 — 15 V
Vo > 4.6V Vo +2V — 28 V
Output Voltage Tolerance ∆VoOver Vin range, Io = 2.0A — ±1.0 ±2.0 %Vo
Ta = 0°C to +60°C
Line Regulation Regline Over Vin range — ±0.4 ±0.8 %Vo
Load Regulation Regload 0.1 ≤ Io ≤ 2.0A — ±0.2 ±0.4 %Vo
Ripple/Noise VnVin = Vin min, Io = 2.0A — 1 — %Vo
Transient Response ttr 50% load change — 100 — µSec
(with 100µF output cap) Vo over/undershoot 5.0 %Vo
Efficiency ηVin = 9V, Io = 2.0A, Vo = 5V — 82 — %
Switching Frequency ƒoOver Vin and Io ranges Vo > 4.6V 700 750 800 kHz
Vo = 3.3V 0.95 1.0 1.05 MHz
Absolute Maximum Ta— -40 — +85 °C
Operating Temperature Range
Recommended Operating TaFree Air Convection, (40-60LFM) -40 — +85** °C
Temperature Range Over Vin and Io ranges
Thermal Resistance θja Free Air Convection, (40-60LFM) — 38 — °C/W
Storage Temperature Ts— -40 — +125 °C
Mechanical Shock — Per Mil-STD-883D, Method 2002.3 — 500 — G’s
Mechanical Vibration — Per Mil-STD-883D, Method 2007.2, —5 —G’s
20-2000 Hz, soldered in a PC board
Weight — — — 7 — Grams
* ISR will operate down to no load with reduced specifications.
** See Thermal Derating chart.
Note:
The 78HT200 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.
Revised 9/22/99
For assistance or to order, call (800) 531-5782
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
CHARACTERISTIC DATA
Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Note)
78HT205_ 5.0 VDC
(See Note 1)
Efficiency vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Efficiency (%)Ripple (mV)PD (Watts)
Iout (A)
Iout (A)
Iout (A)
78HT200 Series
78HT233_ 3.3 VDC
(See Note 1)
Efficiency vs Output Current
Ripple vs Output Current
Power Dissipation vs Output Current
Efficiency (%)Ripple (mV)PD (Watts)
Iout (A)
Iout (A)
Iout (A)
Vin
Vin
Vin Vin
Vin
Vin
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0
8.0V
10.0V
15.0V
20.0V
28.0V
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0
8.0V
10.0V
12.0V
14.0V
15.0V
0
5
10
15
20
25
30
0.0 0.5 1.0 1.5 2.0
8.0V
10.0V
12.0V
14.0V
15.0V
0
10
20
30
40
50
60
0.0 0.5 1.0 1.5 2.0
8.0V
10.0V
15.0V
20.0V
28.0V
0.0
0.5
1.0
1.5
2.0
2.5
0.0 0.5 1.0 1.5 2.0
8.0V
10.0V
12.0V
14.0V
15.0V
0.0
0.5
1.0
1.5
2.0
2.5
0.0 0.5 1.0 1.5 2.0
8.0V
10.0V
15.0V
20.0V
28.0V
Thermal Derating (Ta) (See Note 2)
Iout (A)
Vin (Volts)
0.0
0.5
1.0
1.5
2.0
810121416
Thermal Derating (Ta) (See Note 2)
Iout (A)
Vin (Volts)
0.0
0.5
1.0
1.5
2.0
8 1216202428
70°C
85°C
60°C
85°C
70°C
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
78HT205HC NRND SIP MOD
ULE EFA 3 25 Pb-Free
(RoHS) Call TI N / A for Pkg Type
78HT205SC NRND SIP MOD
ULE EFC 3 25 Pb-Free
(RoHS) Call TI Level-1-215C-UNLIM
78HT205TC NRND SIP MOD
ULE EFT 3 25 Pb-Free
(RoHS) Call TI N / A for Pkg Type
78HT205VC NRND SIP MOD
ULE EFD 3 25 TBD Call TI Level-1-215C-UNLIM
78HT210HC OBSOLETE SIP MOD
ULE EFA 3 TBD Call TI Call TI
78HT210SC OBSOLETE SIP MOD
ULE EFC 3 TBD Call TI Call TI
78HT210VC OBSOLETE SIP MOD
ULE EFD 3 TBD Call TI Call TI
78HT233HC NRND SIP MOD
ULE EFA 3 25 Pb-Free
(RoHS) Call TI N / A for Pkg Type
78HT233SC NRND SIP MOD
ULE EFC 3 TBD Call TI Call TI
78HT233VC NRND SIP MOD
ULE EFD 3 25 Pb-Free
(RoHS) Call TI N / A for Pkg Type
78HT246HC OBSOLETE SIP MOD
ULE EFA 3 TBD Call TI Call TI
78HT246SC OBSOLETE SIP MOD
ULE EFC 3 TBD Call TI Call TI
78HT246VC OBSOLETE SIP MOD
ULE EFD 3 TBD Call TI Call TI
78HT253SC OBSOLETE SIP MOD
ULE EFC 3 TBD Call TI Call TI
78HT253VC OBSOLETE SIP MOD
ULE EFD 3 TBD Call TI Call TI
78HT265HC NRND SIP MOD
ULE EFA 3 25 Pb-Free
(RoHS) Call TI N / A for Pkg Type
78HT265SC OBSOLETE SIP MOD
ULE EFC 3 TBD Call TI Call TI
78HT265TC NRND SIP MOD
ULE EFT 3 25 Pb-Free
(RoHS) Call TI N / A for Pkg Type
78HT265VC OBSOLETE SIP MOD
ULE EFD 3 TBD Call TI Call TI
78HT275HC OBSOLETE SIP MOD
ULE EFA 3 TBD Call TI Call TI
78HT275SC OBSOLETE SIP MOD
ULE EFC 3 TBD Call TI Call TI
78HT275VC OBSOLETE SIP MOD
ULE EFD 3 TBD Call TI Call TI
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 1
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Nov-2009
Addendum-Page 2
IMPORTANT NOTICE
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