PQ1CY1032ZZ Sharp Microelectronics, PQ1CY1032ZZ Datasheet - Page 7

• Manufacturer Part Number: PQ1CY1032ZZ
• Description: IC REG CHOPPER ADJ 3.5A TO-263
• Manufacturer: Sharp Microelectronics
• Type: Step-Down (Buck), Invertingr

Specifications of PQ1CY1032ZZ

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.26 ~ 35 V, -1.26 ~ -30 V
• Current - Output: 3.5A
• Frequency - Switching: 150kHz
• Voltage - Input: 8 ~ 35 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (5 leads + tab)
• Power - Output: 35W
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 425-1767-5

When ambient temperature Ta and power dissipation P
element to operate within the safety operation area specified by the derating curve. Insufficient radiation gives an unfavorable
influence to the normal operation and reliability of the device.
1. In the following circuit,when V
2. Soft startup
3. Over current protection
turned OFF and the device becomes stand-by mode. Dissipation current at stand-by mode becomes Max.400 A.
When transistor Tr becomes OFF, output voltage can be ON.
External resistor Rs should be leaded to avold discharge current of C
When capacitor C
When the voltage of V
less than V
more than V
Thermal Protection Design
ON/OFF Control Terminal
V
IN
THIL
Internal power dissipation(P)of device is generally obtained by the following equation.
THIL
, over current protection function will operate. Since the PQ1CY1032Z must use an capacitor C
, over current shut down function will operate.
––––––––––––––
––––––––––––––––––––
P=I
Step down type
Polarity inversion type
S
is loaded, output pulse gradually expanded and output voltage will start softly.
SW
(Average.) V
soft
D'(Duty)= –––––––– = –––––––––––––
I
D'(Duty)= –––––––– = ––––––––––––––––––––
I
C
SW
SW
5
IN
(Average)= I
(Average)= –––––––– I
is more than V
soft
1
terminal
T(period)
T(period)
SAT
PQ1CY1032Z
T
T
O
on
on
(Output current.)
1–D'
THIL
D' + V
5
1
4
becomes low (loss than V
3
, over current shut down function will operate. And when the voltage of V
V
IN
IN–
(voltage between V
C
V
V
O
S
IN
V
(Output current.)
O
D
+|V
+V
SAT
2
(MAX)during operation are determined, use Cu plate which allows the
5
|V
ON/OFF control signal
F
+V
O
O
|–V
|+V
Tr
F
SAT
F
R
+V
S
V
S
, and not to break the transistor Tr.
F
F
: Forward voltage of the diode
THON
IN
to COM terminal) I
) by switching transistor Tr on, output voltage may be
D
L
R
R
2
1
Q
'(consumption current)
C
O
I
O
PQ1CY1032Z
S
, V
V
soft
O
5
Load
should be
soft
5
is