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MCP1601T-I/MS

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
MCP1601
DS21762B-page 4 2003-2013 Microchip Technology Inc.
TEMPERATURE SPECIFICATIONS
Protection Features
Average Short Circuit Current — 890 — mA R
LOAD
< 1 ohm
Under-Voltage Lockout UVLO 2.4 — 2.7 V For V
IN
decreasing
Under-Voltage Lockout Hysteresis UVLO-
HYS
— 190 — mV
Thermal Shutdown T
SHD
— 160 — °C
Thermal Shutdown Hysteresis T
SHD-HYS
—10—°C
Interface Signals (SHDN
, SYNC/PWM)
Logic Low Input V
IN-HIGH
— — 15 % of
V
IN
Logic High Input V
IN-HIGH
45 — — % of
V
IN
Input Leakage Current I
IN-LK
——0.1µA
Electrical Specifications: Unless otherwise noted, all parameters apply at V
DD
= 2.7V to 5.5V
Parameters Symbol Min Typ Max Units Conditions
Temperature Ranges
Specified Temperature Range T
A
-40 — +85 °C
Operating Junction Temperature Range T
J
-40 — +125 °C
Storage Temperature Range T
A
-65 — +150 °C
Thermal Package Resistances
Thermal Resistance, 8 Pin MSOP
JA
— 208 — °C/W Single-Layer SEMI G42-88
Board, Natural Convection
ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, V
IN
=4.2V, V
OUT
=1.8V, I
LOAD
= 10 mA, T
A
=-40°C to +85°C.
Parameters Sym Min Typ Max Units Conditions
2003-2013 Microchip Technology Inc. DS21762B-page 5
MCP1601
2.0 TYPICAL PERFORMANCE CURVES
Note: Unless otherwise indicated, V
IN
= 4.2V, V
OUT
= 1.8V, L = 10 µH, C
OUT
= 10 µF (X5R Ceramic), C
IN
= 10 µF (X5R
Ceramic), SYNC/PWM=V
IN
.
FIGURE 2-1: Efficiency vs. Load Current
(V
OUT
= 1.2V).
FIGURE 2-2: Efficiency vs. Load Current
(V
OUT
= 1.8V).
FIGURE 2-3: Efficiency vs. Load Current
(V
OUT
= 3.3V).
FIGURE 2-4: PFM Mode Quiescent
Current vs. Input Voltage.
FIGURE 2-5: Oscillator Frequency vs.
Input Voltage.
FIGURE 2-6: Output Voltage vs. Load
Current.
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
40
50
60
70
80
90
100
0 100 200 300 400 500
Load Current (mA)
Efficiency (%)
V
OUT
= 1.2V
Auto PWM/PFM
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
50
60
70
80
90
100
110
0 100 200 300 400 500
Load Current (mA)
Efficiency (%)
V
OUT
= 1.8V
Auto PWM/PFM
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
50
60
70
80
90
100
110
0 100 200 300 400 500
Load Current (mA)
Efficiency (%)
V
OUT
= 3.3V
Auto PWM/PFM
V
IN
= 5.0V
V
IN
= 4.5V
V
IN
= 5.5V
100
110
120
130
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
Input Voltage (V)
PFM Mode Quiescent Current
(µA)
V
OUT
= 1.8V
PFM Mode
I
LOAD
= 0
T
A
= - 40°C
T
A
= + 0°C
T
A
= + 85°C
T
A
= + 25°C
680.0
700.0
720.0
740.0
760.0
780.0
2.73.13.53.94.34.75.15.5
Input Voltage (V)
Internal Oscillator Frequency
(kHz)
T
A
= + 125°C
T
A
= - 40°C
T
A
= + 25°C
T
A
= 0°C
I
LOAD
= 10 mA
Forced PWM Mode
1.100
1.125
1.150
1.175
1.200
1.225
1.250
1.275
1.300
0 100 200 300 400 500
Load Current (mA)
Output Voltage (V)
V
OUT
= 1.2V
Auto PWM/PFM
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
MCP1601
DS21762B-page 6 2003-2013 Microchip Technology Inc.
Note: Unless otherwise indicated, V
IN
= 4.2V, V
OUT
= 1.8V, L = 10 µH, C
OUT
= 10 µF (X5R Ceramic), C
IN
= 10 µF (X5R
Ceramic), SYNC/PWM=V
IN
.
FIGURE 2-7: Output Voltage vs. Load
Current.
FIGURE 2-8: Output Voltage vs. Load
Current.
FIGURE 2-9: Input to Output Voltage
Differential for 100% Duty Cycle vs. Load
Current.
FIGURE 2-10: Switch Leakage vs.
Temperature.
FIGURE 2-11: Typical PWM Mode of
Operation Waveforms.
FIGURE 2-12: Typical PFM Mode of
Operation Waveforms.
1.700
1.720
1.740
1.760
1.780
1.800
1.820
0 100 200 300 400 500
Load Current (mA)
Output Votlage (V)
V
OUT
= 1.8V
Auto PWM/PFM
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
3.10
3.13
3.15
3.18
3.20
3.23
3.25
3.28
3.30
3.33
3.35
0 100 200 300 400 500
Load Current (mA)
Output Voltage (V)
V
OUT
= 3.3V
Auto PWM/PFM
V
IN
= 4.5V
V
IN
= 5.0V
V
IN
= 5.5V
0
50
100
150
200
250
300
350
400
450
0 100 200 300 400 500
Load Current (mA)
Dropout Voltage (mV)
V
OUT
= 3.3V
V
OUT
= 2.7V
Dropout = (V
IN
-V
OUT
) in mV @ 97% of V
OUT
0.0
1.5
3.0
4.5
-40 -15 10 35 60 85
Ambient Temperature (°C)
L
X
Leakage Current (nA)
V
IN
= 5.0V
Synchronous N
Channel
BUCK Switch P
Channel
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

MCP1601T-I/MS

Mfr. #:
Buy MCP1601T-I/MS
Manufacturer:
Microchip Technology
Description:
Switching Voltage Regulators 500mA Sych Buck
Lifecycle:
New from this manufacturer.
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