Datasheet

TPS62230, TPS62231, TPS62232, TPS62233, TPS62234, TPS62235, TPS62236
TPS62237, TPS62238, TPS62239, TPS622310, TPS622311, TPS622312
TPS622313, TPS622314, TPS622315, TPS622316, TPS622317, TPS622318
SLVS941E –APRIL 2009–REVISED DECEMBER 2010 www.ti.com
ELECTRICAL CHARACTERISTICS
V
IN
= 3.6V, V
OUT
= 1.8V, EN = V
IN
, MODE = GND, T
A
= –40°C to 85°C
(1)
typical values are at T
A
= 25°C (unless otherwise
noted), C
IN
= 2.2μF, L = 2.2μH, C
OUT
= 4.7μF, see parameter measurement information
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY
V
IN
Input voltage range
(2)
2.05 6 V
I
OUT
= 0mA. PFM mode enabled (Mode = 0)
22 40 μA
device not switching
I
OUT
= 0mA. PFM mode enabled (Mode = 0)
25 μA
I
Q
Operating quiescent current
device switching, V
IN
= 3.6V, V
OUT
= 1.2V
I
OUT
= 0 mA. Switching with no load
(MODE/DATA = V
IN
), PWM operation, 3 mA
V
OUT
= 1.8V, L = 2.2μH
I
SD
Shutdown current EN = GND
(3)
0.1 1 μA
Falling 1.8 1.9 V
UVLO Undervoltage lockout threshold
Rising 1.9 2.05 V
ENABLE, MODE THRESHOLD
V
IH TH
Threshold for detecting high EN, MODE 2.05 V ≤ V
IN
≤ 6V , rising edge 0.8 1 V
V
IL TH HYS
Threshold for detecting low EN, MODE 2.05 V ≤ V
IN
≤ 6V , falling edge 0.4 0.6 V
I
IN
Input bias Current, EN, MODE EN, MODE = GND or V
IN
= 3.6V 0.01 0.5 μA
POWER SWITCH
High side MOSFET on-resistance 600 850
R
DS(ON)
V
IN
= 3.6V, T
Jmax
= 85°C; R
DS(ON)
max value mΩ
Low Side MOSFET on-resistance 350 480
Forward current limit MOSFET high-
690 850 1050 mA
side
I
LIMF
V
IN
= 3.6V, open loop
Forward current limit MOSFET low side 550 840 1220 mA
T
SD
Thermal shutdown Increasing junction temperature 150 °C
Thermal shutdown hysteresis Decreasing junction temperature 20 °C
CONTROLLER
t
ONmin
Minimum ON time V
IN
3.6V, V
OUT
= 1.8V, Mode = high, I
OUT
= 0 mA 135 ns
t
OFFmin
Minimum OFF time 40 ns
OUTPUT
V
REF
Internal Reference Voltage 0.70 V
V
IN
= 3.6V, Mode = GND, device operating in PFM
0%
Mode, I
OUT
= 0mA
Output voltage accuracy
(4)
V
IN
= 3.6V, MODE = V
IN
, T
A
= 25°C –2.0% 2.0%
V
OUT
I
OUT
= 0 mA
T
A
= –40°C to 85°C –2.5% 2.5%
DC output voltage load regulation PWM operation, Mode = V
IN
= 3.6V, V
OUT
= 1.8 V 0.001 %/mA
DC output voltage line regulation I
OUT
= 0 mA, Mode = V
IN
, 2.05V ≤ V
IN
≤ 6V 0 %/V
Time from active EN to V
OUT
= 1.8V, V
IN
= 3.6V,
t
Start
Start-up Time 100 μs
10Ω load
I
LK_SW
Leakage current into SW pin V
IN
= V
OUT
= V
SW
= 3.6 V, EN = GND
(5)
0.1 0.5 μA
(1) In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may
have to be derated. Maximum ambient temperature (T
A(max)
) is dependent on the maximum operating junction temperature (T
J(max)
), the
maximum power dissipation of the device in the application (PD(max)), and the junction-to-ambient thermal resistance of the
part/package in the application (θ
JA
), as given by the following equation: T
A(max)
= T
J(max)
– (θ
JA
× P
D(max)
).
(2) The minimum required supply voltage for startup is 2.05V. The part is functional down to the falling UVL (Under Voltage Lockout)
threshold
(3) Shutdown current into VIN pin, includes internal leakage
(4) V
IN
= V
O
+ 1.0 V
(5) The internal resistor divider network is disconnected from FB pin.
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