unr-3.3/3-d12 C&D Technologies., unr-3.3/3-d12 Datasheet - Page 3

• Manufacturer Part Number: unr-3.3/3-d12
• Description: Single Output, Non-isolated, 1.8/2.5/3.3vo U T 3.6-10w Dc/dc Converters
• Manufacturer: C&D Technologies.

Performance/Functional Specifications
Typical @ T
Specifications apply to both surface-mount and through-hole models, unless noted.
Input Voltage Range:
Overvoltage Shutdown
Start-Up Threshold:
Undervoltage Shutdown:
Input Current:
Input Ripple Current:
Input Filter Type
Reverse-Polarity Protection
On/Off Control ➂
V
Temperature Coefficient
Ripple/Noise (20MHz BW) ➃
Line/Load Regulation
Efficiency
Current Limiting ➄
Transient Response (50% load step):
Start-Up Time: ➅ ➆
Switching Frequency
Operating Temperature (Ambient):
Storage Temperature
Flammability
OUT
D5 Models
D12 Models
D12 Models ➁
D12 Models ➁
Normal Operating Conditions
Standby Mode (Off or undervoltage):
Output Short-Circuit Condition
1.8V
2.5V
1.8V
2.5V
3.3V
3.3V
1.8V
2.5V
3.3V
V
On/Off to V
Without Derating
With Derating
IN
1.8V
2.5V
3.3V
Accuracy (50% load):
to V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
A
OUT
OUT
OUT
= +25°C under nominal line voltage and full-load conditions with no external filtering.
OUT
, 3.3V
, 3.3V
, 3.3V
Models
Models
D5 Models
D12 Models
Models
D5 Models
: D5 Models
, 3.3V
OUT
D12 Models
D12 Models
OUT
OUT
OUT
: D5 Models
OUT
D12 Models
D12 Models
D12 Models
D5 Models
D5 Models
Dynamic Characteristics
Environmental
Output
Input
4.75-5.5 Volts (5V nominal)
10.8-13.6 Volts (12V nominal)
None
10.2V typical, 10.8V maximum
9.6V typical, 8.2V minimum
See Ordering Guide
20mA typical, 30mA maximum
11mA typical, 20mA maximum
5mA typical, 10mA maximum
50mArms
50mAp-p
150mAp-p
Capacitive
None
TTL high (or open) = on, low = off
1.5V typical logic threshold
±1.75% (±32mV) maximum
±1.75% (±44mV) maximum
±1.5% (±50mV) maximum
±1% (±33mV) maximum
±0.02% per °C
See Ordering Guide
See Ordering Guide
See Ordering Guide
Auto-recovery
20µsec to ±1% of final value
30µsec to ±1% of final value
40µsec to ±1% of final value
100msec typical, 120msec maximum
13msec typical, 20msec maximum
60msec typical, 120msec maximum
13msec typical, 20msec maximum
200kHz (±30kHz)
–40 to +65/70°C
to +100°C (See Derating Curves)
–40 to +105°C
UL 94V-0
www.murata-ps.com
Single Output, Non-Isolated, 1.8/2.5/3.3V
➀ ➆
➀ D5 models require a minimum 300mA load current to maintain specified regulation.
tions.
On/Off Control for normal operation. See On/Off Control for details. The UNR-3.3/3-D12 and
➁ See Startup Threshold and Undervoltage Shutdown for details.
➂ See On/Off Control for details.
➃ The 22µF external input capacitor required for the UNR-3.3/3-D12 and D12SM should be
minimally rated for 1.5Arms ripple current and 125mΩ ESR. Output noise for all models
can be further reduced with the installation of external output capacitors. See I/O
➄ Current limiting initiates at approximately 30% above rated load. Under short-circuit
➅ See Start-Up Time for details.
➆ D5/D5SM models may experience start-up problems if voltages greater than 1.0V (for 3.3V
Dimensions:
Shielding:
Case Connection (Surface Mount)
Case Material:
Pin Material:
Weight
These are stress ratings. Exposure of devices to any of these conditions may adversely
affect long-term reliability. Proper operation under conditions other than those listed in the
Performance/Functional Specifications Table is not implied.
Input Voltage:
Input Reverse-Polarity Protection
Output Overvoltage Protection
Output Current
Storage Temperature
Lead Temperature
Surface Mount Package
Through Hole Package
Surface Mount Package
Through Hole Package
Surface Mount Package
Through Hole Package
RoHS:
Non-RoHS
D12 models have no minimum load requirement. Operating D5 models under no-load
conditions will not damage these devices, however they may not meet all listed specifica-
The UNR-1.8/2-D5 and D5SM require an external 15Ω pull-up resistor between +Input and
D12SM are specifiied with an external 22µF input capacitor. See I/O Filtering for details.
for details.
conditions, output current folds back to approximately 150mA and input current drops to
approximtely 50mA. Both remain at those levels until the short is removed.
models) or 1.2V (for 1.8/2.5V models) are present across the output pins during power-up.
Continuous:
Transient (100msec):
Selective soldering (10 sec.)
Reflow soldering (75 sec.)
D5 Models
D12 Models
D5 Models
D12 Models
Technical enquiries email: [e-mail], tel:
Absolute Maximum Ratings
Physical
out
.
1" x 1" x 0.47" (25 x 25 x 11.9mm)
1" x 1" x 0.45" (25 x 25 x 11.4mm)
5-sided
None
Input/output return
Corrosion-resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Diallyl phthalate, UL94V-0 rated
Gold plate over copper alloy
Tin over copper alloy
0.6 ounces (17 grams)
3.6-10W DC/DC Converters
7 Volts
15 Volts
15 Volts
24 Volts
None
None
Current limited. Devices can
withstand a sustained output
short circuit without damage.
–40 to +105°C
+300°C
+230°C
UNR Series
MDC_UNR 3.6-10W_B01
[phone]
Filtering
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