1997
DATA SHEET
MOS INTEGRATED CIRCUIT
Document No. S10643EJ2V0DS00 (2nd edition)
Date Published May 1997 N
Printed in Japan
PD16901
The
PD16901 is a DC/DC converter IC which produces a 12 V output from a 5 V input source. The integration
of a control circuit and power MOSFET in the output stage on a single-chip allows a power supply for flash memory
write and erasure to be configured with a reduced number of external components.
FEATURES
With an on-chip output stage power MOSFET, fewer external components are needed.
The ALLMOS structure achieves low power consumption.
Internally set output voltage eliminates the need for adjustment.
Output can be turned ON/OFF via an external signal.
A timer latch type overcurrent protection circuit on chip
ORDERING INFORMATION
Part Number
Package
PD16901GS
14-pin plastic SOP (300 mil)
BLOCK DIAGRAM
ON/OFF
V
IN
C
DLY
C
1H
C
1L
C
2
FB
R
T
GND
C.S.
V
SW
F/F
Reference
voltage circuit
Startup
circuit
Timer latch short-circuit
protection circuit
Charge pump
circuit
Oscillation
circuit
Overcurrent
detection circuit
SW
FLASH MEMORY VOLTAGE STEPUP DC/DC CONVERTER IC
The information in this document is subject to change without notice.
2
PD16901
ABSOLUTE MAXIMUM RATINGS (T
A
= 25 C unless specified otherwise)
Item
Symbol
Condition
Rating
Unit
Supply voltage
V
IN
7.0
V
Output voltage
V
SW
20
V
Total power dissipation
P
T
Note
0.9
W
Operating ambient temperature
T
A
20 to 85
C
Storage temperature range
T
stg
55 to +150
C
Note When 90 mm
90 mm
1.6 mm thick glass epoxy board is mounted
RECOMMENDED OPERATING RANGE
Item
Symbol
MIN.
TYP.
MAX.
Unit
Supply voltage
V
DD
4.5
5.0
5.5
V
Charge pump capacitor
C1, C2
0.033
0.1
0.47
F
Operating ambient temperature
T
A
0
70
C
ELECTRICAL SPECIFICATIONS (T
A
= 25 C, V
IN
= 5 V unless specified otherwise)
Item
Symbol
Condition
MIN.
TYP.
MAX.
Unit
(Oscillation block)
Oscillation frequency
f
OSC
R
T
= 68 k
153
167
181
kHz
On duty
DUTY
67
%
(Low voltage misoperation preventive circuit)
Operation start voltage
V
IN(start-up)
3.3
3.7
4.3
V
Operation stop voltage
V
IN(stop)
2.7
3.2
3.8
V
Hysteresis width
V
HYS
0.3
0.5
0.7
V
(Overcurrent detection block)
Overcurrent detection voltage
V
DET
270
300
330
mV
(On/off control block)
ON/OFF pin input voltage
V
IH
4.5 V
V
IN
5.5 V
V
IN
*0.7
V
V
IL
4.5 V
V
IN
5.5 V
V
IN
*0.3
V
ON/OFF pin input current
I
IL
ON/OFF pin voltage = 0
20
5
1
A
(Charge pump circuit)
Output voltage
V
CHG
4.5 V
V
IN
5.5 V
8.0
11
V
0 C
T
A
70 C
(Short-circuit protection circuit)
Timer latch pin output current
I
SCP
R
T
= 68 k
2.0
3.3
4.5
A
Timer latch detection voltage
V
DETT
0.85
1.0
1.15
V
(Output block)
Output stage on resistance
R
DS(ON)
I
PK
= 0.5 A
0.3
0.5
Output stage leakage current
I
DSOFF
V
DS
= 20 V
1.0
A
3
PD16901
PIN CONFIGURATION (Top View)
14
C
2
13
V
SW
12
NC
11
NC
10
NC
9
CS
8
FB
1
C
1H
2
C
1L
3
V
CC
4
ON/OFF
CONTROL
5
R
T
6
C
DLY
7
GND
4
PD16901
PACKAGE DRAWINGS
14 PIN PLASTIC SOP (300 mil)
ITEM
MILLIMETERS
INCHES
A
B
C
E
F
G
H
I
J
10.46 MAX.
1.27 (T.P.)
1.8 MAX.
1.55
7.70.3
1.42 MAX.
0.12
1.1
5.6
M
0.10.1
N
0.412 MAX.
0.056 MAX.
0.0040.004
0.071 MAX.
0.061
0.3030.012
0.220
0.043
0.005
0.050 (T.P.)
P14GM-50-300B-4
P
3
3
+7
NOTE
Each lead centerline is located within 0.12 mm (0.005 inch) of
its true position (T.P.) at maximum material condition.
D
0.40
0.016
+0.10
0.05
K
0.20
0.008
+0.10
0.05
L
0.60.2
0.024
0.10
3
+7
3
0.004
+0.008
0.009
+0.004
0.002
+0.004
0.003
A
C
D
G
P
detail of lead end
F
E
B
H
I
J
L
K
N
M
1
7
14
8
M
5
PD16901
STANDARD CHARACTERISTIC CURVES
P
T
- T
A
characteristic
Total Power dissipation P
T
(W)
Ambient temperature T
A
(C)
f
OSC
-V
IN
characteristic
Oscillation frequency f
OSC
(kHz)
Input voltage V
IN
(V)
I
CC (ON)
- V
IN
characteristic
Operating circuit current I
CC (ON)
(mA)
Input voltage V
IN
(V)
f
OSC
- T
A
characteristic
Oscillation frequency f
OSC
(kHz)
Ambient temperature T
A
(C)
V
DET
- T
A
characteristic
Overcurrent detection voltage V
DET
(mV)
Ambient temperature T
A
(C)
V
DETT
- T
A
characteristic
Timer latch detection voltage V
DETT
(V)
Ambient temperature T
A
(C)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
20
0
20
40
60
80
100
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
3.5
4.0
4.5
5.0
6.0
6.5
5.5
T
A
= 85 C
T
A
= 0 C
T
A
= 25 C
85 C
139 C/W
340
330
320
310
300
290
280
270
20
0
20
40
60
80
100
180
175
170
165
160
155
3.5
4.0
4.5
5.0
6.0
6.5
5.5
1.12
1.1
1.08
1.06
1.04
1.02
1.0
0.98
20
0
20
40
60
80
100
180
175
170
165
160
155
150
145
20
0
20
40
60
80
100
V
IN
= 5 V
V
IN
= 5 V
V
IN
= 5 V
T
A
= 25 C
When mounted on
90 mm
90 mm
1.6 mm
glass epoxy board
0.9 W
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